Question

2. Valency is the number of hydrogen atoms which can combine with (or displace] one at
of the element ſor radical] forming a compound'. With reference to the above definition
valency, state the valency of chlorine in hydrogen chloride, giving reasons.
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Answer 1

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In Hydrogen Chloride (HCl), one atom of chlorine is combined with one atom of hydrogen and also 1 atom of hydrogen can be replaced by metals like potassium , sodium. Hence valency of chlorine is one.

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