Question

B) how do the valency and the atomic size of the elements vary while going from left to right along a period in the

Answer 1

Answer:

The valency first increases and then decreases while moving from left to right along a period .

The atomic size decreases but with the exception of halogens which has a smaller size than the noble gases .

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Answer 2

Explanation:

the atomic size increases while going from left to right