Question

K,Li,Na,Be which have smallest atomic radius

Answer 1

Li ( lithium) have smallest atomic radius.

Answer 2

k has atomic number 19
Li have atomic number 3
Na atomic number 11
Be has atomic number 4
Be has smallest atomic radius because the atomic radius decreasing within a period and atomic radius increasing down the group
so as Be have group 2 and period 2 it have smallest atomic radius
mark me as brainlest