Question

Common oxidation state of scandium, a transition is/are [Ar. No. of Sc = 21]

• A. +4
• B. +1
• C. +2 and + 3
• D. + 4 and +1

Answer 1

Answer: (C)

Sc (Z = 21): $[Ar{]}^{18}4s^{2}2d^1$
Common oxidation states of Sc can be +2 and +3