The electronic configuration of Scandium is 1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 3d1. Scandium has 21 electrons.

How many neutrons does scandium have?

Scandium has 24 neutrons. There are some 26 isotopes of Scandium in which one is stable, scandium-45 the remaining are radioisotopes.

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What is scandium?

Scandium is a chemical element that has an atomic number 21. Its standard atomic weight is 44.955 amu. It is represented by the symbol Sc. In the periodic table, it is in the 3rd group and 4th period. Its electronic configuration is 1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 3d1 and it is d-block element. It has a silvery-white colour and solid at STP. Its melting point is 1814 K ?(1541 °C, ?2806 °F) and its boiling point is 3109 K ?(2836 °C, ?5136 °F). Its oxidation is 0,+1,+2,+3 and electronegativity is 1.36 (Pauling scale).

Scandium was first predicted by Russian chemist Dmitri Mendeleev in his periodic table. Later on, it was discovered and isolated by Lars Fredrik Nilson in 1879. Scandium has some 25 radioisotopes and one stable isotope Scandium-45. About 18 to 25 ppm is found in Earth's crust. Scandium is classified as a rare earth element. It could be found in minerals such as gadolinite and euxenite.