The group having isoelectronic species i s ....

Options

A. `O^(2-),f^(-),Na^(+).Mg^(2+)`
B. `O^(-),F^(-),Na,Mg^(+)`
C. `O^(2),F^(-),Na,Mg^(2+)`
D. `O^(-),F^(-),Na^(+),Mg^(2+)`

Answer

A

Explanation

Note : Option A isoelectronic in species .

`therefore` option (B,C,D) are not isoelectronic species