Which has the most stable `+2` oxidation state ?

Options

A. Sn
B. Pb
C. Fe
D. Ag

Answer

B

Explanation

`Pb^(2+)(5d^(10)6s^(2))`, has the most stable +2 oxidation state because here the d-orbital is completely filled and is more stable than `Fe^(2+)(3d^(6))`. Again `Ag^(+)(4d^(10))` is more stable as here again the d-orbital is completely filled and `Ag^(2+)` is not easily obtained. `Pb^(2+)` is more stable compared to `Sn^(2+)(4d^(10)5s^(2))` because of its large size.