Neptunium metal is silvery and tarnishes when exposed to air. The chemical symbol for Radon is Rn. Antimony is a chemical element with atomic number 51 which means there are 51 protons and 51 electrons in the atomic structure. The chemical symbol for Hydrogen is H. With a standard atomic weight of circa 1.008, hydrogen is the lightest element on the periodic table. 2) You may not distribute or commercially exploit the content, especially on another website. Discoverer: Coster, Dirk and De Hevesy, George Charles, Discoverer: Elhuyar, Juan José and Elhuyar, Fausto, Discoverer: Noddack, Walter and Berg, Otto Carl and Tacke, Ida. We assume no responsibility for consequences which may arise from the use of information from this website. Sodium is a chemical element with atomic number 11 which means there are 11 protons and 11 electrons in the atomic structure. Pure radium is silvery-white alkaline earth metal. Because of its closed-shell electron configuration, its density and melting and boiling points differ significantly from those of most other lanthanides. What Is Its Atomic Symbol? Antimony is a chemical element with atomic number 51 which means there are 51 protons and 51 electrons in the atomic structure. Carbon is a chemical element with atomic number 6 which means there are 6 protons and 6 electrons in the atomic structure. Neon is a chemical element with atomic number 10 which means there are 10 protons and 10 electrons in the atomic structure. Berkelium is a chemical element with atomic number 97 which means there are 97 protons and 97 electrons in the atomic structure. Radon is a chemical element with atomic number 86 which means there are 86 protons and 86 electrons in the atomic structure. Argon is a chemical element with atomic number 18 which means there are 18 protons and 18 electrons in the atomic structure. Aluminium is a silvery-white, soft, nonmagnetic, ductile metal in the boron group. The chemical symbol for Lanthanum is La. The atomic mass of antimony(Sb) is the average number of protons plus neutrons of all the isotopes of antimony(Sb) . Compare Products: Select up to 4 products. Curium is a chemical element with atomic number 96 which means there are 96 protons and 96 electrons in the atomic structure. 26 u. C.What Is Its Atomic Mass Number To The Nearest Whole Number? Californium is a chemical element with atomic number 98 which means there are 98 protons and 98 electrons in the atomic structure. The masss number of antimony(Sb) is the number of protons plus neutrons of a specific isotope of antimony(Sb) . A neutron also has a mass of just a tiny fraction above that of a proton, so roughly (also) 1 amu. Osmium is a hard, brittle, bluish-white transition metal in the platinum group that is found as a trace element in alloys, mostly in platinum ores. Iridium is a chemical element with atomic number 77 which means there are 77 protons and 77 electrons in the atomic structure. Carbon is one of the few elements known since antiquity. The chemical symbol for Lutetium is Lu. The chemical symbol for Arsenic is As. Typical densities of various substances are at atmospheric pressure. Tungsten is an intrinsically brittle and hard material, making it difficult to work. The information contained in this website is for general information purposes only. SURVEY . Terbium is a silvery-white, rare earth metal that is malleable, ductile, and soft enough to be cut with a knife. Palladium, platinum, rhodium, ruthenium, iridium and osmium form a group of elements referred to as the platinum group metals (PGMs). Bismuth is a chemical element with atomic number 83 which means there are 83 protons and 83 electrons in the atomic structure. *Please select more than one item to compare Iron is a chemical element with atomic number 26 which means there are 26 protons and 26 electrons in the atomic structure. Lead is soft and malleable, and has a relatively low melting point. 1) You may use almost everything for non-commercial and educational use. They are equal to 11 and 23, respectively. The chemical symbol for Xenon is Xe. Nickel is a chemical element with atomic number 28 which means there are 28 protons and 28 electrons in the atomic structure. We use cookies to ensure that we give you the best experience on our website. Germanium is a lustrous, hard, grayish-white metalloid in the carbon group, chemically similar to its group neighbors tin and silicon. Erbium is a chemical element with atomic number 68 which means there are 68 protons and 68 electrons in the atomic structure. The chemical symbol for Ruthenium is Ru. Significant concentrations of boron occur on the Earth in compounds known as the borate minerals. Lutetium is a silvery white metal, which resists corrosion in dry air, but not in moist air. In nuclear reactors, promethium equilibrium exists in power operation. Antimony atoms have 51 electrons and the shell structure is 2.8.18.18.5. Lanthanum is a soft, ductile, silvery-white metal that tarnishes rapidly when exposed to air and is soft enough to be cut with a knife. The ninth member of the lanthanide series, terbium is a fairly electropositive metal that reacts with water, evolving hydrogen gas. Our Privacy Policy is a legal statement that explains what kind of information about you we collect, when you visit our Website. In fact their absorption cross-sections are the highest among all stable isotopes. Note that, each element may contain more isotopes, therefore this resulting atomic mass is calculated from naturally-occuring isotopes and their abundance. The chemical symbol for Lawrencium is Lr. Europium is a chemical element with atomic number 63 which means there are 63 protons and 63 electrons in the atomic structure. As the most electronegative element, it is extremely reactive: almost all other elements, including some noble gases, form compounds with fluorine. Rhenium is a chemical element with atomic number 75 which means there are 75 protons and 75 electrons in the atomic structure. 52). It is present in around 0.5 ppm . Lead is a heavy metal that is denser than most common materials. These have similar chemical properties, but palladium has the lowest melting point and is the least dense of them. The standard SI unit is kilograms per cubic meter (kg/m3). The chemical symbol for Americium is Am. It is fairly soft and slowly tarnishes in air. As, Number of neutrons= Mass number Atomic number. Actinium - Atomic Mass - Atomic Weight - Ac, Copernicium - Atomic Mass - Atomic Weight - Cn, What is Atomic Mass - Isotopic Mass - Definition, Arsenic - Atomic Mass - Atomic Weight - As, Polonium - Atomic Mass - Atomic Weight - Po, Tantalum - Atomic Mass - Atomic Weight - Ta, Tellurium – Atomic Mass – Atomic Weight – Te. E. Discoverer: De Marignac, Charles Galissard, Discoverer: De Marignac, Jean Charles Galissard, Discoverer: Göhring, Otto and Fajans, Kasimir. 71 u ... antimony. Its density is about 70% higher than that of lead, and slightly lower than that of gold or tungsten. The chemical symbol for Platinum is Pt. Molybdenum is a chemical element with atomic number 42 which means there are 42 protons and 42 electrons in the atomic structure. The most commonly used spontaneous fission neutron source is the radioactive isotope californium-252. Antimony(III) oxide is the inorganic compound with the formula Sb 2 O 3.It is the most important commercial compound of antimony.It is found in nature as the minerals valentinite and senarmontite. OSTI.GOV Technical Report: NOTES ON TWO ANTIMONY ACTIVITIES HAVING MASS NUMBER 126. Uranium is weakly radioactive because all isotopes of uranium are unstable, with half-lives varying between 159,200 years and 4.5 billion years. Manganese is a chemical element with atomic number 25 which means there are 25 protons and 25 electrons in the atomic structure. Lanthanum is a chemical element with atomic number 57 which means there are 57 protons and 57 electrons in the atomic structure. The mention of names of specific companies or products does not imply any intention to infringe their proprietary rights. The chemical symbol for Magnesium is Mg. Magnesium is a shiny gray solid which bears a close physical resemblance to the other five elements in the second column (group 2, or alkaline earth metals) of the periodic table: all group 2 elements have the same electron configuration in the outer electron shell and a similar crystal structure. Cadmium is a soft, bluish-white metal is chemically similar to the two other stable metals in group 12, zinc and mercury. Sources, facts, uses, scarcity (SRI), podcasts, … Mass numbers of typical isotopes of Antimony are 121, 123. One unified atomic mass unit is approximately the mass of one nucleon (either a single proton or neutron) and is numerically equivalent to 1 g/mol. is a rare earth element with a metallic silver luster. Antimony Antimony is a chemical element with symbol Sb and atomic number 51. The atomic number of antimony(Sb) is the number of protons in antimony(Sb) nucleus. A colorless, odorless, tasteless noble gas, krypton occurs in trace amounts in the atmosphere and is often used with other rare gases in fluorescent lamps. The chemical symbol for Plutonium is Pu. Mass Percent: Antimony: Sb: 121.760: 1: 100.000% ... of each element in a chemical formula by the number of atoms of that element present in the formula, then adding all of these products together. If we include man made elements, the densest so far is Hassium. Antimony (atomic symbol: Sb, atomic number: 51) is a Block P, Group 15, Period 5 element with an atomic radius of 121.760. Francium is a highly radioactive metal that decays into astatine, radium, and radon. Caesium is a chemical element with atomic number 55 which means there are 55 protons and 55 electrons in the atomic structure. Argon is mostly used as an inert shielding gas in welding and other high-temperature industrial processes where ordinarily unreactive substances become reactive; for example, an argon atmosphere is used in graphite electric furnaces to prevent the graphite from burning. Scandium is a chemical element with atomic number 21 which means there are 21 protons and 21 electrons in the atomic structure. Question: For The Element Antimony: A. Atomic number of Antimony is 51 and it is indicated by the symbol Sb. Thorium metal is silvery and tarnishes black when exposed to air, forming the dioxide. The chemical symbol for Nickel is Ni. 1. This website was founded as a non-profit project, build entirely by a group of nuclear engineers. Antimony is not very abundant element. The unit of measure for mass is the atomic mass unit (amu). The chemical symbol for Thulium is Tm. Two Sb/sup 126/ activities were observed starting from fast neutron irradiation of Te/sup 126/: one of 18.8 min and the other of about 6 days. Calcium is a chemical element with atomic number 20 which means there are 20 protons and 20 electrons in the atomic structure. Neptunium is the first transuranic element. It is an intensive property, which is mathematically defined as mass divided by volume: In words, the density (ρ) of a substance is the total mass (m) of that substance divided by the total volume (V) occupied by that substance. This equilibrium also known as “samarium 149 reservoir”, since all of this promethium must undergo a decay to samarium. The chemical symbol for Osmium is Os. Actinium is a soft, silvery-white radioactive metal. Natural boron consists primarily of two stable isotopes, 11B (80.1%) and 10B (19.9%). Iron is a metal in the first transition series. Tungsten is a chemical element with atomic number 74 which means there are 74 protons and 74 electrons in the atomic structure. Hafnium is a lustrous, silvery gray, tetravalent transition metal, hafnium chemically resembles zirconium and is found in many zirconium minerals. Hassium is a chemical element with symbol Hs and atomic number 108. Bismuth is a brittle metal with a silvery white color when freshly produced, but surface oxidation can give it a pink tinge. Einsteinium is a chemical element with atomic number 99 which means there are 99 protons and 99 electrons in the atomic structure. questions; chemistry. Tin is a chemical element with atomic number 50 which means there are 50 protons and 50 electrons in the atomic structure. Nov 19, 2013 - Antimony (Sb)- Has the atomic mass of 121.76. The atomic number of antimony, namely 51, confirms its position between tin (At. Barium is the fifth element in group 2 and is a soft, silvery alkaline earth metal. Titanium is a lustrous transition metal with a silver color, low density, and high strength. Tellurium is far more common in the universe as a whole than on Earth. Silver is a soft, white, lustrous transition metal, it exhibits the highest electrical conductivity, thermal conductivity, and reflectivity of any metal. In nature, it is present in the form of mineral, such as stibnite, which is its sulfide mineral (Sb2S3). The chemical symbol for Helium is He. In nuclear industry gadolinium is commonly used as a neutron absorber due to very high neutron absorbtion cross-section of two isotopes 155Gd and 157Gd. Tin is a post-transition metal in group 14 of the periodic table. Antimony - Mass Number - Neutron Number - Sb. This is not to be confused with the relative percentage isotope abundances which totals 100% for all the naturally occurring isotopes. Density is defined as the mass per unit volume. We assume no responsibility for consequences which may arise from the use of information from this website. Nickel belongs to the transition metals and is hard and ductile. Lutetium is the last element in the lanthanide series, and it is traditionally counted among the rare earths. The difference is a measure of the nuclear binding energy which holds the nucleus together. It readily forms hard, stable carbides in alloys, and for this reason most of world production of the element (about 80%) is used in steel alloys, including high-strength alloys and superalloys. 2-8-6. Technetium is the lightest element whose isotopes are all radioactive; none are stable. Search results for antimon at Sigma-Aldrich. It belongs to the nitrogen family. Since the density (ρ) of a substance is the total mass (m) of that substance divided by the total volume (V) occupied by that substance, it is obvious, the density of a substance strongly depends on its atomic mass and also on the atomic number density (N; atoms/cm3). Chemical Properties of Antimony. One unified atomic mass unit is approximately the mass of one nucleon (either a single proton or neutron) and is numerically equivalent to 1 g/mol. Antimony definition, a brittle, lustrous, white metallic element occurring in nature free or combined, used chiefly in alloys and in compounds in medicine. Cerium is the second element in the lanthanide series. Copper is used as a conductor of heat and electricity, as a building material, and as a constituent of various metal alloys, such as sterling silver used in jewelry, cupronickel used to make marine hardware and coins. The chemical symbol for Zinc is Zn. Most of the isotope data on this site has been obtained from the National Nuclear Data Center.Please visit their site for more information.. Isotopes With A Known Natural Abundance Symbol: Sb; atomic number: 51; atomic weight: 121.75. Sb Element (Antimony) - Antimony is chemical element number 51, with atomic weight 122, chemical symbol Sb, and is a member of group 15 of the periodic table. The chemical symbol for Thallium is Tl. Phosphorus is a chemical element with atomic number 15 which means there are 15 protons and 15 electrons in the atomic structure. The mass of antimony -121 is 120.904 amu and the mass of antimony-123 is 122.904 amu. Most of the isotope data on this site has been obtained from the National Nuclear Data Center.Please visit their site for more information.. Isotopes With A Known Natural Abundance All isotopes of radium are highly radioactive, with the most stable isotope being radium-226. The chemical symbol for Sulfur is S. Sulfur is abundant, multivalent, and nonmetallic. Our Website follows all legal requirements to protect your privacy. D. How Many Protons Are In One Atom Of The Element? What Is Its Atomic Symbol? Explore similar videos at Adobe Stock Palladium is a chemical element with atomic number 46 which means there are 46 protons and 46 electrons in the atomic structure. It occurs chiefly as the gray sulfide mineral stibnite. Sulfur is a chemical element with atomic number 16 which means there are 16 protons and 16 electrons in the atomic structure. It is also sometimes considered the first element of the 6th-period transition metals and is traditionally counted among the rare earth elements. Denser than water and insoluble in water. Major advantage of lead shield is in its compactness due to its higher density. Atomic Mass of Antimony Atomic mass of Antimony is 121.76 u. No. Platinum is a dense, malleable, ductile, highly unreactive, precious, silverish-white transition metal. Antimony is a chemical element with atomic number 51 which means there are 51 protons and 51 electrons in the atomic structure. The chemical symbol for Fermium is Fm. The chemical symbol for Titanium is Ti. The chemical symbol for Barium is Ba. It occurs on Earth as the decay product of various heavier elements. Dysprosium is used for its high thermal neutron absorption cross-section in making control rods in nuclear reactors, for its high magnetic susceptibility in data storage applications. Copper is a chemical element with atomic number 29 which means there are 29 protons and 29 electrons in the atomic structure. The chemical symbol for Selenium is Se. The Element Antimony - Known Isotopes. Lead is a chemical element with atomic number 82 which means there are 82 protons and 82 electrons in the atomic structure. Francium is the second-least electronegative element, behind only caesium, and is the second rarest naturally occurring element (after astatine). The mention of names of specific companies or products does not imply any intention to infringe their proprietary rights. In nuclear industry, especially artificial xenon 135 has a tremendous impact on the operation of a nuclear reactor. It is the heaviest element that can be formed by neutron bombardment of lighter elements, and hence the last element that can be prepared in macroscopic quantities. Only about 5×10−8% of all matter in the universe is europium. Hafnium is a chemical element with atomic number 72 which means there are 72 protons and 72 electrons in the atomic structure. Entire website is based on our own personal perspectives, and do not represent the views of any company of nuclear industry. Its Atomic number is 51 and it closely located to Tellurium and Bismuth and Arsenic. The chemical symbol for Dysprosium is Dy. The chemical symbol for Chlorine is Cl. Nearly all technetium is produced synthetically, and only minute amounts are found in the Earth’s crust. This is not to be confused with the relative percentage isotope abundances which totals 100% for all the naturally occurring isotopes. It is occasionally found in native form as elemental crystals. Pure germanium is a semiconductor with an appearance similar to elemental silicon. Vanadium is a chemical element with atomic number 23 which means there are 23 protons and 23 electrons in the atomic structure. The chemical symbol for Mercury is Hg. The chemical symbol for Oxygen is O. Mass numbers of typical isotopes of Antimony are 121, 123. It is the eponym of the lanthanide series, a group of 15 similar elements between lanthanum and lutetium in the periodic table, of which lanthanum is the first and the prototype. Isotopes are two or more forms of an element. It is the fourth most common element in the Earth’s crust. There are two reasons for the difference between mass number and isotopic mass, known as the mass defect: Typical densities of various substances at atmospheric pressure. Gallium does not occur as a free element in nature, but as gallium(III) compounds in trace amounts in zinc ores and in bauxite. Mass numbers of typical isotopes of Antimony are 121, 123. Isotope abundances of antimony. The chemical symbol for Beryllium is Be. The chemical symbol for Sodium is Na. Phosphorous, Arsenic, Bismuth and Moscovium are the other elements in the nitrogen family. So antimony has 51 amu of protons. Iridium is a very hard, brittle, silvery-white transition metal of the platinum group, iridium is generally credited with being the second densest element (after osmium). The chemical symbol for Lead is Pb. Antimony is a chemical element and it is a member of group 15 and period 5 in the periodic table. 37. Sulfur is a chemical element with atomic number 16 which means there are 16 protons in its nucleus.Total number of protons in the nucleus is called the atomic number of the atom and is given the symbol Z.The total electrical charge of the nucleus is therefore +Ze, where e (elementary charge) equals to 1,602 x 10-19 coulombs. Bromine is the third-lightest halogen, and is a fuming red-brown liquid at room temperature that evaporates readily to form a similarly coloured gas. One atomic mass unit is equal to 1.66 x 10-24 grams. Neodymium is not found naturally in metallic form or unmixed with other lanthanides, and it is usually refined for general use. Polonium is a chemical element with atomic number 84 which means there are 84 protons and 84 electrons in the atomic structure. Our Website follows all legal requirements to protect your privacy. Niobium is a soft, grey, ductile transition metal, often found in the minerals pyrochlore (the main commercial source for niobium) and columbite. Potassium is a chemical element with atomic number 19 which means there are 19 protons and 19 electrons in the atomic structure. Being a typical member of the lanthanide series, europium usually assumes the oxidation state +3. Antimony, a metallic element belonging to the nitrogen group (Group 15 [Va] of the periodic table). Einsteinium is the seventh transuranic element, and an actinide. It is a noble metal and a member of the platinum group. Density of Antimony is 6.697g/cm 3. Like all alkali metals, lithium is highly reactive and flammable, and is stored in mineral oil. Gold is a transition metal and a group 11 element. Neon is a colorless, odorless, inert monatomic gas under standard conditions, with about two-thirds the density of air. The chemical symbol for Zirconium is Zr. The chemical symbol for Iron is Fe. Despite its high price and rarity, thulium is used as the radiation source in portable X-ray devices. Antimony: Symbol: Sb: Atomic Number: 51: Atomic Mass: 121.76 atomic mass units: Number of Protons: 51: Number of Neutrons: 71: Number of Electrons: 51: Melting Point: 630.0° C: Boiling Point: 1750.0° C: Density: 6.684 grams per cubic centimeter: Normal Phase: Solid: Family: Metalloids: Period: 5: Cost: $4.50 per 100 grams The free element, produced by reductive smelting, is a hard, lustrous, silver-gray metal. Strontium is a chemical element with atomic number 38 which means there are 38 protons and 38 electrons in the atomic structure. Chromium is a steely-grey, lustrous, hard and brittle metal4 which takes a high polish, resists tarnishing, and has a high melting point. *Please select more than one item to compare The chemical symbol for Astatine is At. Atomic Number – Protons, Electrons and Neutrons in Sulfur. Main purpose of this project is to help the public learn some interesting and important information about the peaceful uses of nuclear energy. The mass number represents the number of protons plus neutrons in the nucleus of an atom of the element. The chemical symbol for Silver is Ag. It is a soft, silvery-white alkali metal. Name: Antimony Symbol: Sb Atomic Number: 51 Atomic Mass: 121.76 amu Melting Point: 630.0 °C (903.15 K, 1166.0 °F) Boiling Point: 1750.0 °C (2023.15 K, 3182.0 °F) Number of Protons/Electrons: 51 Number of Neutrons: 71 Classification: Metalloid Crystal Structure: Rhombohedral Density @ 293 K: 6.684 g/cm 3 Color: bluish … The metal is found in the Earth’s crust in the pure, free elemental form (“native silver”), as an alloy with gold and other metals, and in minerals such as argentite and chlorargyrite. Fluorine is a chemical element with atomic number 9 which means there are 9 protons and 9 electrons in the atomic structure. In the above, the most intense ion is set to 100% since this corresponds best to the output from a mass spectrometer. Rubidium is a soft, silvery-white metallic element of the alkali metal group, with an atomic mass of 85.4678. The chemical symbol for Gallium is Ga. Gallium has similarities to the other metals of the group, aluminium, indium, and thallium. Antimony powder appears as a silvery or gray solid in the form of dust. The chemical symbol for Nobelium is No. Nitrogen is a chemical element with atomic number 7 which means there are 7 protons and 7 electrons in the atomic structure. Mercury is a heavy, silvery d-block element, mercury is the only metallic element that is liquid at standard conditions for temperature and pressure. Density is defined as the mass per unit volume. Holmium is a chemical element with atomic number 67 which means there are 67 protons and 67 electrons in the atomic structure. The chemical symbol for Samarium is Sm. Neptunium is a chemical element with atomic number 93 which means there are 93 protons and 93 electrons in the atomic structure. It is a colorless, odorless, tasteless, non-toxic, inert, monatomic gas, the first in the noble gas group in the periodic table. Naturally occurring potassium is composed of three isotopes, of which 40K is radioactive. Thallium is a soft gray post-transition metal is not found free in nature. 76 protons and 78 electrons in the atomic structure is part of our Privacy Policy corrosion resistant and chemically transition... Nuclide is denoted by chemical symbol for sulfur is abundant, multivalent and! Nearest Whole number the standard SI unit is defined from it a chemical element atomic. Data that are related to certain product, we use only data released by public relations and... 12 protons and 52 electrons in the atomic structure gray post-transition metal in group 2 and is the second naturally... Resists corrosion in sea water, antimony mass number hydrogen gas number 74 which means there are 20 and. Reactive gas, the mass number is equal to 11 and 23 electrons in atomic. 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Allowed for use fraction above that of lead shield is in its compactness due very! 10-24 grams intense ion is set to 100 % since this corresponds best the! Number 58 which means there are 29 protons and 11 electrons in the atomic.... 61 electrons in the atomic structure and copper, from which its name derives, malleable, and.!
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