Which of the following has maximum ionisation energy ? | CHEMISTRY - GENERAL CHARACTERISTICS OF COMPOUNDS OF THE ALKALINE EARTH METALS | SolveeIt | Solveeit

Today, August 23

Question

Which of the following has maximum ionisation energy ?

A

Ba Ba+ + e–

B

Be Be+ + e–

C

Ca Ca2+ + 2e–

D

Mg Mg2+ + 2e–

Answer

Mg Mg2+ + 2e–

Explanation

Solution

Down the group size increases and therefore, attraction between valence shell electron and nucleus decreases and thus ionisation energy decreases