Question

Give a reason why silver exibits a valency of +1 & +2

Answer 1

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Explanation:

Silver exhibits variable valency

Argentic(silver 2)=Ag²+

Argentous(silver 1)Ag+

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Answer 2

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An atom of an element can sometimes lose more electrons than are present in its valence shell i.e. loss from the penultimate shell and hence exhibit more than 1 or variable valency. ... - At other times, silver loses one electron from 5s & 4d each to show valency +2.