Question

How does atomic size change with the increase in atomic number?​

Answer 1

Explanation:

AS you across the periodic table the atomic number increases, but the atomic radius decreases. ... As one goes across a period the atomic radius decreases because more protons are in the atoms as one goes across the period and the electrons are in the same shell.

Answer 2

Explanation:

Increase in atomic number leads to an increase in the number of protons and electrons in the atoms. Due to the large nuclear charge (positive charge on the nucleus), the electrons are pulled in more close to the nucleus and the size of atom decreases.