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Calculating Oxidation Number

The oxidation...

Question

The oxidation number of an element can be zero.

A

True

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B

False

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Solution

The correct option is A
True

Oxidation number is the total number of electrons either gained or lost by an atom on its bond formation.

The oxidation number of all the atoms of different elements in their respective elementary states is taken to be zero. For example, in $N_{2}$ , $C l_{2}$ , $H_{2}$ , $P_{4}$ , $S_{8}$ , $O_{2}$ , $B r_{2}$ , Na, Fe, Ag etc. the oxidation number of each atom is zero.

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The oxidation number of an element can be zero.

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Q. Assertion :Oxidation number of an element can be a whole number, zero or a fractional number. But valency can never be zero. Reason: Valency of inert gases is zero.

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