Tellurium is a brittle, mildly toxic, rare, silver-white metalloid. It is the fourth most common element in the Earth’s crust. Its physical and chemical properties are most similar to its heavier homologues strontium and barium. Osmium is the densest naturally occurring element, with a density of 22.59 g/cm3. The electron configuration is the distribution of electrons of an atom or molecule (or other physical structure) in atomic or molecular orbitals. The chemical symbol for Hafnium is Hf. The chemical symbol for Rhenium is Re. The configuration notation provides an easy way for scientists to write and communicate how electrons are arranged around the nucleus of an atom. The chemical symbol for Thulium is Tm. Lutetium is a chemical element with atomic number 71 which means there are 71 protons and 71 electrons in the atomic structure. Discoverer: Davy, Sir H. and Thénard, L.-J. Lead is a heavy metal that is denser than most common materials. Iridium is a chemical element with atomic number 77 which means there are 77 protons and 77 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. The first alloy used on a large scale was bronze, made of tin and copper, from as early as 3000 BC. 2) You may not distribute or commercially exploit the content, especially on another website. The chemical symbol for Platinum is Pt. Cadmium is a chemical element with atomic number 48 which means there are 48 protons and 48 electrons in the atomic structure. In nuclear industry, especially artificial xenon 135 has a tremendous impact on the operation of a nuclear reactor. Praseodymium is a soft, silvery, malleable and ductile metal, valued for its magnetic, electrical, chemical, and optical properties. Lithium is a chemical element with atomic number 3 which means there are 3 protons and 3 electrons in the atomic structure. al. The chemical symbol for Rhodium is Rh. The chemical symbol for Bromine is Br. 2.1. Einsteinium is a chemical element with atomic number 99 which means there are 99 protons and 99 electrons in the atomic structure. Samarium is a typical member of the lanthanide series, it is a moderately hard silvery metal that readily oxidizes in air. Commercially, thallium is produced as a byproduct from refining of heavy metal sulfide ores. where m is the electronic mass, m = 9.109 × 10–31 kg, v is the speed of the electron in the orbit, acceleleration a = v2/r and is directed towards the nucleus. ASTM,171,Atomic-Mass,327,Atomic-Number,436,Atomic-Radius,86,Atomic-Symbol,329,Atomic-Volume,94,Boiling-Point,94,Chemical-Elements,100,Chemical-Symbol,217,Coefficient-of-Thermal-Expansion,85,Covalent-Radius,87,Crystal-Structure,109,Density,309,Elastic-Modulus,30,Electrical-Conductivity,79,Electro-Affinity,87,Electron-Configuration,109,Electronegativity,102,Electrons-per-Shell,112,Enthalpy-of-Fusion,93,Enthalpy-of-Vaporization,95,Group-Number,218,Heat-of-Fusion,87,Heat-of-Vaporization,85,Ionic-Radius,78,Ionization-Energy,102,Ionization-Potential,101,Melting-Point,96,Oxidation-States,104,Period-Number,107,Properties,40,Specific-Gravity,83,Specific-Heat,92,Specific-Weight,1,Tests,2,Thermal-Conductivity,105,Valence-Electrons,98. What is the electron configuration of chromium? The chemical symbol for Cerium is Ce. The chemical symbol for Europium is Eu. The chemical symbol for Vanadium is V. Vanadium is a hard, silvery grey, ductile, and malleable transition metal. The chemical symbol for Fluorine is F. Fluorine is the lightest halogen and exists as a highly toxic pale yellow diatomic gas at standard conditions. For example, silicon has nine possible integer oxidation states from −4 to +4, but only -4, 0 and +4 are common oxidation states. Possible oxidation states are -4; ..; +4. 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. As the most electronegative element, it is extremely reactive: almost all other elements, including some noble gases, form compounds with fluorine. 1 Answer anor277 Jul 27, 2017 #1s^(2)2s^(2)2p^(6)3s^(2)3p^(2)# Explanation: We … Iron is a metal in the first transition series. Platinum is a dense, malleable, ductile, highly unreactive, precious, silverish-white transition metal. 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.