What are different possible oxidation states exhibited by scandium?

What are different possible oxidation states exhibited by scandium?
  1. +4
  2. +5
  3. +4,+5
  4. +2,+3

Solution

Common oxidation state of sc (atomic number 21 ) is +2 $\left(\mathrm{Sc}^{+2} 3 d^{\prime} 4 s^{\circ}\right)$ and $+3\left(\operatorname{sc}^{+3} 3 d^{\circ} 4 s^{\circ}\right)$

Asked in: MHT CET 2023 (09 May Shift 1)

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