Question

atom having smallest
atomic size​

Answer 1

Answer:

Helium is the atom having the smallest size.

Helium is the atom having the smallest size. The atomic radius gets smaller because the electron orbit fills up to form an octet and for each of the additional electron, a proton is added to the nucleus, pulling all the electron shells closer around the nucleus.

Helium is the atom having the smallest size. The atomic radius gets smaller because the electron orbit fills up to form an octet and for each of the additional electron, a proton is added to the nucleus, pulling all the electron shells closer around the nucleus.Explanation:

I hope it's helpful for you xd

Answer 2

Answer:

Explanation:

Helium

Atomic radii vary in a predictable way across the periodic table. As can be seen in the figures below, the atomic radius increases from top to bottom in a group, and decreases from left to right across a period. Thus, helium is the smallest element, and francium is the largest.