Question

Explain the variation of atomic size in a group and in a period.

Answer 1

Answer:

atomic size increase both case

Answer 2

Answer:

✓✓™™©As we move from left to right in a period atomic size decreases. Reason:Along a period number of shells remain the same but nuclear charge increases.Hence attractive force of the nucleus on the valence electrons increases.Thus atomic size decreases along a period. As we move down a group, atomic size increases.....