It was identified as a new element in 1781 and first isolated as a metal in 1783. Thallium is a soft gray post-transition metal is not found free in nature. 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. Bismuth is a brittle metal with a silvery white color when freshly produced, but surface oxidation can give it a pink tinge. Its properties are thus intermediate between those of chlorine and iodine. Each entry has a full citation identifying its source. 1) You may use almost everything for non-commercial and educational use. Pure germanium is a semiconductor with an appearance similar to elemental silicon. Niobium is a chemical element with atomic number 41 which means there are 41 protons and 41 electrons in the atomic structure. 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 chemical symbol for Gold is Au. V Part A tungsten ion with 68 electrons … Zirconium is mainly used as a refractory and opacifier, although small amounts are used as an alloying agent for its strong resistance to corrosion. Xenon is a chemical element with atomic number 54 which means there are 54 protons and 54 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. Arsenic occurs in many minerals, usually in combination with sulfur and metals, but also as a pure elemental crystal. The chemical symbol for Mercury is Hg. Bismuth is a chemical element with atomic number 83 which means there are 83 protons and 83 electrons in the atomic structure. The chemical symbol for Zinc is Zn. Palladium is a chemical element with atomic number 46 which means there are 46 protons and 46 electrons in the atomic structure. Atom is uniquely identified with the atomic … It is a member of the chalcogen group on the periodic table, a highly reactive nonmetal, and an oxidizing agent that readily forms oxides with most elements as well as with other compounds. The chemical symbol for Tellurium is Te. Calcium is an alkaline earth metal, it is a reactive pale yellow metal that forms a dark oxide-nitride layer when exposed to air. Electronic configuration: 1s 2 2s 2 2p 6 3s 2 3p 6 3d 10 4s 2 4p 6 4d 10 5s 2 5p 6 4f 14 5d 4 6s 2 >> Back to key information about the elementBack to key information about the element The chemical symbol for Lanthanum is La. The chemical symbol for Germanium is Ge. Atoms, Molecules and Ions. With 68 electrons, it would have a charge of +6. Scandium is a silvery-white metallic d-block element, it has historically been sometimes classified as a rare-earth element, together with yttrium and the lanthanides. Elements with high ionization energies have high electronegativities due to the strong pull exerted by the positive nucleus on the negative electrons. 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. Rhodium is a chemical element with atomic number 45 which means there are 45 protons and 45 electrons in the atomic structure. Cerium is a soft, ductile and silvery-white metal that tarnishes when exposed to air, and it is soft enough to be cut with a knife. The chemical symbol for Aluminum is Al. Discoverer: Davy, Sir H. and Thénard, L.-J. Helps to understand reactivity of elements (especially metals, which lose electrons). Some atoms can split into smaller parts (lighter nuclei). The chemical symbol for Xenon is Xe. Neptunium is a chemical element with atomic number 93 which means there are 93 protons and 93 electrons in the atomic structure. Cadmium is a soft, bluish-white metal is chemically similar to the two other stable metals in group 12, zinc and mercury. The chemical symbol for Ytterbium is Yb. The chemical symbol for Protactinium is Pa. Protactinium is a dense, silvery-gray metal which readily reacts with oxygen, water vapor and inorganic acids. Caesium is a soft, silvery-gold alkali metal with a melting point of 28.5 °C, which makes it one of only five elemental metals that are liquid at or near room temperature. Vanadium is a chemical element with atomic number 23 which means there are 23 protons and 23 electrons in the atomic structure. Ge 3. The chemical symbol for Bismuth is Bi. It is one of the least reactive chemical elements and is solid under standard conditions. Thorium is a chemical element with atomic number 90 which means there are 90 protons and 90 electrons in the atomic structure. Tungsten fluoride (WF 5) 4; Tungsten hexacarbonyl [W(CO) 6] Tungsten silicide (WSi 2) Interesting facts: It has the highest melting point of all the non-alloyed metals and the second highest of the elements after carbon. Tungsten, or wolfram, is a chemical element with the symbol W and atomic number 74. It is a colorless, odorless, tasteless, non-toxic, inert, monatomic gas, the first in the noble gas group in the periodic table. Lead is a chemical element with atomic number 82 which means there are 82 protons and 82 electrons in the atomic structure. … al. A major development was the discovery that steel could be made highly resistant to corrosion and discoloration by adding metallic chromium to form stainless steel. Being a typical member of the lanthanide series, europium usually assumes the oxidation state +3. Francium is an alkali metal, that has one valence electron. Nobelium is the tenth transuranic element and is the penultimate member of the actinide series. Elemental sulfur is a bright yellow crystalline solid at room temperature. : Sandia Lab., Albuquerque, N. Mex. Carbon is the 15th most abundant element in the Earth’s crust, and the fourth most abundant element in the universe by mass after hydrogen, helium, and oxygen. A Tungsten atom, for example, requires the following ionization energy to remove the outermost electron. Electron Affinity – Tungsten. Aluminum is a chemical element with atomic number 13 which means there are 13 protons and 13 electrons in the atomic structure. Dysprosium is a chemical element with atomic number 66 which means there are 66 protons and 66 electrons in the atomic structure. Neodymium is a chemical element with atomic number 60 which means there are 60 protons and 60 electrons in the atomic structure.
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