Question

The set representing the correct order for first ionisation potential is
(a) K > Na > Li
(b) Be > Mg > Ca
(c) B > C > N
(d) Ge > Si > C

Answer 1

b is the right answer

1. hope it helps you

Answer 2

Answer:

Explanation:

First ionisation potential decrease down the group because atomic radius increase. Hence the correct order is option ( b).

Be>mg>ca it is right because radius is decreasing order.

Hope it help you