Which of the following describes the halogen element?

Options

A. They are monoatomic and form ion of the type `X^+`
B. They are diatomic and form ion of type `X^+`
C. They are diatomic and form ion of the type `X^(-)`
D. They are polyatomic and form ion of the type `X^(-)`

Answer

C

Explanation

Halogens are diatomic molecule `(X_2)` in the elemental state and form ion of the type `X^-`