Question

The $(IE{)}_1$ and the $(IE{)}_2$ $(inkJmo{l}^{-1}$), of three elements I, II and III are given below:

	I	II	III
(IE)${}_1$	403	549	1142
(IE)${}_2$	2640	1060	2080

Identify the element which is likely to be an alkali metal.

• A. $I$
• B. $II$
• C. $III$
• D. All

Answer 1

The correct option is A $I$

ELement with minimum $IE$ will be an alkali metal because alkali metal can loose electron very easily owing to their high metallic nature.