An element M has an atomic number 9 and ...

An element M has an atomic number 9 and atomic mass 19. Its ion will be represented by
(1) M (2) `M^(2+)` (3) `M^(-)` (4) `M^(2-)`

A

`M^(+)`

B

`M^(2+)`

C

`M^(-)`

D

`M^(2-)`

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The correct Answer is:

C

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