Question

Question #6a80e

Answer 1

The oxidation number of `"Mn"` is +6.

Explanation:

The name is manganate ion, `"MnO"_4^"2-"`.

Reason

`"Mn = +6"`

`"O = -2", color(white)(x)"4 × O" = 4 ×("-2") = "-8"`

`"1e"^"-" = "-1"`

∴ `"MnO"_4^"2-" = "+7 - 8 - 1 = -2"`