20 POINTS PLEASE ANSWER

Chemistry

1 answer:

Sever21 [200]3 years ago

8 0

c. It decreases when going down a group.

Explanation:

Ionization energy is the energy needed to remove an electron from the neutral gaseous atom.

It is represented in kJ/mol.

As we move down the group the ionization energy decreases, since the outermost electrons are far away from the nucleus of an atom and so attains greater shielding effect. They encounter a weaker force of attraction to the +ve charge on the nucleus. And so, Ionization energy decreases from top to bottom in a group.

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