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Question

The equivalent weight of an element is $$4$$. Its chloride has a vapour density $$59.25$$. Then, the valency of the element is:


A
4
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B
3
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C
2
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D
1
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Solution

The correct option is B 3
Molecular weight $$=2\times$$Vapour density $$=2\times59.25 = 118.5$$
Also, molecular weight $$=x\times 4+x\times 35.5=118.5$$; (where $$x$$ is the valency of the element)
On solving, we get $$x$$ $$= 3$$.

Chemistry

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