Which one of the following group 16 elements does not exist in -2 oxidation state ?

Options

A. S
B. Se
C. O
D. Po

Answer

D

Explanation

In the group 16, most metallic element (i.e. most electropositive element) does not show - 2 oxidation state as its electronegativity is very low.
Hence, Po (polonium) (Z = 84) does not show -2 oxidation state because on going down the group, electropositive nature increases.