Question

How does the ionization energy vary when we move down in a group..?Give reason
please help me..​

Answer 1

Explanation:

Moving left to right within a period or upward within a group, the first ionization energy generally increases. ... Conversely, as one progresses down a group on the periodic table, the ionization energy will likely decrease since the valence electrons are farther away from the nucleus and experience greater shielding.