Question

As a chlorine atom becomes a negative ion, the atom

(1) gains an electron and its radius increases
(2) gains an electron and its radius decreases
(3) loses an electron and its radius increases
(4) loses an electron and its radius decreases

Answer 1

(1) gains an electron and its radius increases

Step-by-step 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.