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faltersainse [42]
3 years ago
6

20 POINTS PLEASE ANSWER

Chemistry
1 answer:
Sever21 [200]3 years ago
8 0

c. It decreases when going down a group.  

<u>Explanation:</u>

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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