On moving from left to right in a period in the periodic table, the size of the atom

On moving from left to right in a period in the periodic table, the size of the atom

Q. On moving from left to right in a period in the periodic table, the size of the atom

A.            increases

B.            decreases

C.            does not change appreciably

D.            first decreases and then increases.

Answer: decreases

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