Question

Question 26
Which of the following set of elements is written in order of their increasing metallic character?

(a) Be, Mg, Ca
(b) Na, Li, K
(c) Mg, Al, Si
(d) C, O, N

Answer 1

Option (a) is correct.

Down a group, the atomic size increases and though nuclear charge also increases, yet the effect of increased atomic size is greater compared to the increased nuclear charge. Hence, down a group elements readily lose electrons and metallic character increases.