Question

why ionization energy decrease in group and in

Answer 1

Answer:

As a result, it is easier for valence shell electrons to ionize, and thus the ionization energy decreases down a group. ... This is due to valence shell stability. The ionization energy of the elements within a group generally decreases from top to bottom. This is due to electron shielding.

hope it helps..!!

Answer 2

Answer:

Explanation:

Ionization energy is the amount of energy required to remove an electron from outer most valance shell of a gaseous atom.

GROUP: It decreases in group due to increase in the size of an atom, shielding effect and decrease in the nucleus charge showing that the hold of nucleus on the outer most shell becomes less and it becomes easy to remove electrons from the outer most shell. :))