Which of the following ion acts as an oxidising agent?

Options

A. `Eu^(2+)`
B. `Np^(4+)`
C. `Sm^(2+)`
D. `Yb^(2+)`

Answer

B

Explanation

The ions whose oxidatio state change from +4 to +3 act as an oxidising agent while those ions whose oxidation state change from +2 to +3 tends to act as reducing agents. Therefore, `Np^(4+)` is an oxidising agent.