Question

In Lanthanide series, the element well known to exhibit $+4$ oxidation state is

• A. Lu
• B. Ce
• C. Pm
• D. Nd

Answer 1

Answer: (B)

$Ce(58)=[Xe]4f^{1}5d^{1}6s^2$

$C{e}^{+4}=[Xe]4f^{0}5d^{0}6s^0$

Cerium exihibit $+4$ oxidation state.