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Question

Why does Scandium have a 3 plus charge?


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Solution

  • Scandium is a d-block element.
  • Its atomic number is 21.
  • The electronic configuration is 1s22s22p63p63d14s2.
  • If Scandium acquires a +3 oxidation state i.e., loses 3 electrons, the electronic configuration becomes 1s22s22p63p6.
  • This electron configuration is that of Argon which is a noble gas. This electronic configuration is most stable.
  • Noble gas configuration is most stable as the orbitals are completely filled.
  • Hence, Scandium has a 3 plus charge.

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