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Variable Valency

If valency of...

Question

_{If valency of silver is +2 and valency of nitrate is -1,then when they both reacts they form}AgNO3.Explain why?

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Solution

Valency or oxidation number of an element can vary. It need not be a constant in all compounds. For eg. O atom has a general valency of -2 but in peroxides it has a valency -1.

Ag has an oxidation number +1 in AgNO3 not +2.

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