Question

Which of these is true of the first ionization energy within a group?

Question 13 options:

There is no pattern of ionization energy within a group.

The first ionization energy does not vary within a group.

The first ionization energy increases from top to bottom within a group.

The first ionization energy decreases from top to bottom within a group.

Answer 1

As you move down a group, first ionization energy decreases. Electrons are further from the nucleus and thus easier to remove the outermost one