Question

in which of the following species is present in +6 oxidation state

a so2
b h2so3
c h2so4
d na2 s4 o6
​

Answer 1

The oxidation state of chromium is +6.

CrO 2

Cl 2

→x+(−4)+(−2)=0⇒x=+6

The oxidation states of central atoms in other three compounds are:

MnO

4- =+7

Cr(CN) 63− =+3

NiF 62− =+4

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Answer 2

Valency of sulphur in sulphuric sic is 6 .the H is +1 and oxygen is -2oxidation no.