Question

Which of them having smallest radii and why. na+, mg+2, al+3?

Answer 1

Hey guys ,

All have same radii .

REASONS :- 1) Atomic radii decreases left to right.
2) Now , Na (Electronic Configuration) = 2,8,1
Na+ (E.C )= 2,8

Mg (E.C)= 2,8,2
Mg2+ (E.C) = 2,8

Al (E.C )= 2,8,3
Al3+ (E.C ) = 2,8

3) All elements become stable and same electronic configuration.
Therefore , All have same radii.

Thanks.