Scandium is an element with the atomic number 21 and represented with the symbol ‘Sc‘ in the periodic table. Atomic number: 21: Atomic mass: 44.955910: Common isotopes: 45 Sc – 100% Other isotopes exist, see Isotopes of Scandium: Ground state electronic configuration: [Ar]. Scandium is a silver-white hard metal which develops a slightly yellowish or pinkish cast upon exposure to air. 4s 2: Oxidation states: Sc 3+ Physical appearance: What is Scandium? The atomic weight of Sc is 44.95591 grams per mole. of 21. Its atomic number is 21 and atomic weight is 44.95g/mol. : Sc 3+ is commonly concentrated in residual soils and sediments. This member of the transition elements group is a silver-white that has been historically categorized as a rare earth element. Scandium-45 atom is the stable isotope of scandium with relative atomic mass 44.955910, 100 atom percent natural abundance and nuclear spin 7/2. Its atomic number is 21 and indicated by the symbol Sc. Pure form of scandium is produced by heating scandium fluoride with calcium metal. One of the characteristics of Scandium is it gets tarnished and burned easily if ignited. Atomic Mass 44,95591 Learn more about the atomic mass. Scandium is a silvery-white metallic d-block element. Scandium is a chemical element with symbol Sc and atomic number 21. Scandium. Scandium iodide (ScI3) is used in lamps that produce light having a color closely matching natural sunlight. Therefore electronic configuration of scandium(Sc) is: 1s2 2s2 2p6 3s2 3p6 3d1 4s2. You, Sir, could have impregnated google with the question and an answer would have been delivered to you within a second. : Sc 3+ enters early-forming phases in igneous rocks. The colour it develops when exposed to air is yellowish or pinkish cast. Scandium easily reacts with dilute acids. Classified as a transition metal, Scandium is a solid at room temperature. Geochemistry of Scandium; Goldschmidt classification: Lithophile: Sc 3+ was one of the ions least depleted from the mantle in the formation of the crust. Scandium burns easily and reacts with water. Eighth most abundant 'rare earth' found in the earth's crust (5.0 ppm). Scandium is a chemical element that has the symbol Sc and the atomic number 21. It is easily burnt and get tarnished in the presence of air. Scandium has an atomic no. It reacts with water and form hydrogen gas. Description Fairly soft, silvery-white metal. Scandium (Sc) has an atomic number of twenty-one. It is a soft silvery metal that has three times the density of water and can be found in the form of solid at room temperature. Interesting Scandium Facts: Scandium was discovered in 1879 by Lars Fredrik Nilson, who named it after Scandinavia. 3d 1. In the periodic table Sc is a member of 3 rd group and 4 th period. Chemical Characteristics. 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