Question

Statement-1 : Occasionally +2 and +4 oxidation states of lanthanides are obtained.
Statement-2: Empty, half-filled or filled f-subshell are extra stable.
A. Statement-1 is True, Statement-2 is True, Statement-2 is a correct explanation for Statement-1.
B. Statement-1 is True, Statement-2 is True, Statement-2 is not a correct explanation for Statement-1.
C. Statement-1 is True, Statement-2 is false
D. Statement-1 is False and Statement-2 is True.

Answer 1

Correct Answer - A
`+2` and `+4` oxidation state occur if `f^(0), f^(7), f^(14)` E.C. occur.