In some respects zinc is chemically similar to magnesium: both elements exhibit only one normal oxidation state (+2), and the Zn2+ and Mg2+ ions are of similar size. Berkelium is a member of the actinide and transuranium element series. Uranium is a silvery-white metal in the actinide series of the periodic table. Therefore, the effective nuclear charge towards the outermost electrons increases, drawing the outermost electrons closer. Plutonium is an actinide metal of silvery-gray appearance that tarnishes when exposed to air, and forms a dull coating when oxidized. The chemical symbol for Osmium is Os. The standard SI unit is kilograms per cubic meter (kg/m3). For example, 63Cu (29 protons and 34 neutrons) has a mass number of 63 and an isotopic mass in its nuclear ground state is 62.91367 u. Europium is a moderately hard, silvery metal which readily oxidizes in air and water. Enter a chemical formula: Browse the list of common chemical compounds. Its abundance in rocky planets like Earth is due to its abundant production by fusion in high-mass stars. 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. Favorite Answer. 1) You may use almost everything for non-commercial and educational use. 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 Arsenic is As. 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. Rising temperatures make the liquid expand in a liquid-in-tube thermometer and bend bimetallic strips. It is the heaviest essential mineral nutrient. Bromine is a chemical element with atomic number 35 which means there are 35 protons and 35 electrons in the atomic structure. Iodine is a chemical element with atomic number 53 which means there are 53 protons and 53 electrons in the atomic structure. Liquid nitrogen (made by distilling liquid air) boils at 77.4 kelvins (−195.8°C) and is used as a coolant. Holmium is a chemical element with atomic number 67 which means there are 67 protons and 67 electrons in the atomic structure. If you want to get in touch with us, please do not hesitate to contact us via e-mail: Discoverer: Ramsey, Sir William and Cleve, Per Teodor. Francium is a highly radioactive metal that decays into astatine, radium, and radon. Nobelium is a chemical element with atomic number 102 which means there are 102 protons and 102 electrons in the atomic structure. The Van der Waals radius, rw, of an atom is the radius of an imaginary hard sphere representing the distance of closest approach for another atom. The standard SI unit is kilograms per cubic meter (kg/m3). Carbon is a chemical element with atomic number 6 which means there are 6 protons and 6 electrons in the atomic structure. The chemical symbol for Protactinium is Pa. Protactinium is a dense, silvery-gray metal which readily reacts with oxygen, water vapor and inorganic acids. Samarium is a chemical element with atomic number 62 which means there are 62 protons and 62 electrons in the atomic structure. The chemical symbol for Rhodium is Rh. The chemical symbol for Francium is Fr. This dependence is usually expressed by the coefficient of linear or volume expansion. Density is defined as the mass per unit volume. The chemical symbol for Neodymium is Nd. The ordering of the electrons in the ground state of multielectron atoms, starts with the lowest energy state (ground state) and moves progressively from there up the energy scale until each of the atom’s electrons has been assigned a unique set of quantum numbers. The chemical symbol for Nobelium is No. The free element, produced by reductive smelting, is a hard, lustrous, silver-gray metal. There are two reasons for the difference between mass number and isotopic mass, known as the mass defect: Note that, it was found the rest mass of an atomic nucleus is measurably smaller than the sum of the rest masses of its constituent protons, neutrons and electrons. The chemical symbol for Chlorine is Cl. Uranium is a chemical element with atomic number 92 which means there are 92 protons and 92 electrons in the atomic structure. These elements, along with the chemically similar elements scandium and yttrium, are often collectively known as the rare earth elements. Lutetium is the last element in the lanthanide series, and it is traditionally counted among the rare earths. The atomic mass is the mass of an atom. The chemical symbol for Iron is Fe. Arsenic is a metalloid. If we include man made elements, the densest so far is Hassium. Hassium is a chemical element with symbol Hs and atomic number 108. Platinum is one of the least reactive metals. Nickel belongs to the transition metals and is hard and ductile. The chemical symbol for Polonium is Po. The elemental metal is rarely found in nature, but once isolated artificially, the formation of an oxide layer (passivation) stabilizes the free metal somewhat against further oxidation. Increasing the pressure on an material (especially for liquids or gases) decreases the volume of the object and thus increases its density via the atomic number density. Compressibility (also known as the coefficient of compressibility is a measure of the relative volume change of a fluid or solid as a response to a pressure (or mean stress) change. Our Website follows all legal requirements to protect your privacy. The chemical symbol for Thallium is Tl. Palladium is a chemical element with atomic number 46 which means there are 46 protons and 46 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. The chemical symbol for Vanadium is V. Vanadium is a hard, silvery grey, ductile, and malleable transition metal. The chemical symbol for Argon is Ar. 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.

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