Which one of the following is correct about stability of the given ions?

Options

A. `Pb^(2+) gt Pb^(4+)`
B. `Pb^(4+) gt Pb^(3+)`
C. `Si^(3+) gt Si^(4+)`
D. `Sn^(4+) gt Sn^(3+)`

Answer

A

Explanation

Due to inert pair effect, stability of lower oxidation state increases, on moving down the group, hence.
`Pb^(2+) gt Pb^(4+)`.