Question

When electrons are added to the outermost shell of a carbon atom, it forms

an anion that has a larger radius.
an anion that has a smaller radius.
a cation that has a larger radius.
a cation that has a smaller radius.

Answer 1

I believe it forms an anion that has a larger radius.

Answer 2

an anion that has a larger radius.

Step-by-step explanation:

When a neutral atom gains electrons it forms an anion, and when it loses electrons it forms a cation. The radius or size of an anion is greater than a neutral atom. The radius or size of an cation is smaller than a neutral atom.

When electrons are added to the outermost shell of a carbon atom, it forms an anion that has a larger radius.