Question

How does valency of an element vary across a period?
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Answer 1

Answer:

The valency of an element is dependent on the number of electrons in the outermost shell of the electron. ... Across the a period, the number however increase by 1.

Explanation:

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Answer 2

Answer:

The valency of an element is dependent on the number of electrons in the outetrmost shell of the electronacross the period.

Explanation:

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