Question

10) The atomic radii (pm) of first group elements are given below-
Na
Rb Cs K
186 152 244 262 231
a) Arrange them in decreasing order of their atomic radii.​

Answer 1

Answer:

The decreasing order of first group elements on the basis of atomic radii is as follows-

Fr > Cs > Rb > K > Na > Li > H

since down the group atomic radii increases