Question

As a chlorine atom becomes a negative ion, the atom

Answer 1

Answer:

(1) gains an electron and its radius increases

Explanation:

Hello,

Ionization involves the charge of a determined atom in order to form an ion, in this case, the chloride ion which is negative. In such a way, since chloride ion turns out negatively charged via ionization, it is evident that an electron is gained so its radius must increase as result of that gain, therefore, answer is:

(1) gains an electron and its radius increases

As long as a new particle is included into it.

Best regards.

Answer 2

For the answer to the question above , as a chlorine atom becomes a negative ion, the atom gains an electron and its radius increases.
The answer is the first one among the given choices.
I hope my answer helped you.