Question

Molecules cannot react chemically unless they are......

Answer 1

Answer:

c) active

Explanation:

When in an atom the outermost shell is not full (eg. 2,8,3 ; here in the last shell it is not filled completely and needs 5 more electrons to complete it ) then the atom becomes active and molecules doesn't react unless and until an atom is active .

Hope it helps you

And pls mark it as the brainiest answer.