Question

how does atomic size of the elements vary on moving from left to right in a period top to bottom in a group​

Answer 1

On moving from left to right in a period of the periodic table, the atomic size decreases. of protons and electrons in the atoms increases. Due to large positive charge on the nucleus, the electrons are pulled in more close to the nucleus and the size of atom decreases.

Answer 2

Answer:

atomic element is 1 hydrogen clorine it helps u lot and lot✅

Explanation:

I think u don't understand