Which of the following describes the halogen element ?

Options

A. They are monoatomic and form ion of the types `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 valency shell contain seven electrons they one electron to form octet configuration exhibit `X^(-)` & form diatomic