Read MoreWhat is the Oxidation number of S in H2SO4?

What is oxidation number?

therefore terms oxidation number is define as the charge which an atoms appear to have when electrons are counted. it may be positive or may be negative.

What is the Oxidation number of mn in k2mnO4?

Frst off all, You know that, oxidation number of atoms is same as the charge of atoms. it mean,

Oxidation number = charge of atoms

but the oxidation number is may be positive or may be negative.

Let explain with examples

k2mnO4

In this case, the oxidation number of k = +1 but whereas

therefore oxidation number of O = -2

Now, you have no idea what is the value or oxidation number of mn in k2mnO4. So, Let the oxidation number of mn be x.

therefore, sum of oxidation number of various atoms in k2mnO4.

= 2 × (+1) + x + 4 × (-2)

= 2 + x – 8 = x – (8-2)

= x – 6

Now, the sum mist be zero (according to rule 6). Hence,

x – 6 = 0

x = +6

therefore, the oxidation number of mn in k2mnO4 is +6.


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