Question

What happens to the size of atom as we move from left to right in a period.

Answer 1

Explanation:

Moving from left to right across a period, the atomic radius decreases. The nucleus of the atom gains protons moving from left to right, increasing the positive charge of the nucleus and increasing the attractive force of the nucleus upon the electrons.

Answer 2

Here is your answer

When we move from left to right in a periodic table the size of the atom decreases .

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