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Valency

Question 12El...

Question

Question 12
Elements with valency 1 are

(a) always metals
(b) always metalloids
(c) either metals or non-metals
(d) always non-metals

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Solution

The answer is (c).
Metals which have 1 valence electron and non-metals which have 7 valence electrons have valency 1. It is because, metals lose their 1 "e" and non-metals gain 1 "e" to complete their octet.

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