How does the atomic size vary across a period ? Give reason.

Asked by nbharati796 | 3rd Feb, 2020, 06:42: PM

Expert Answer:

Atomic size decreases actross a period from left to right. 
Reason: Along a period number of shells remian the same but nuclear charge increases hence attractive force of the nucleus on valence electrons increases. Thus atomic size decreases.

Answered by Ravi | 4th Feb, 2020, 11:06: AM