Question

give reason:-
b). ionisation enthalpy decrease down the group? ​

Answer 1

Answer:

As we go down the group, the metallic character if elements increases, that is, the tendency to lose electrons increases. So less energy is required to remove the loosley held valence electron. thus I. O. decreases down the group.

Answer 2

Answer:

yes

Explanation:

due to electron shielding