Question

Which one of the following groupings represents a collection of isoelectronic species ?
A. `Na^(+),Ca^(2+),Mg^(2+)`
B. `N^(3-),F^(-),Na^(+)`
C. `Be,Al^(3+),Cl^(-)`
D. `Ca^(2+),Cs^(+),Br`

Answer 1

Correct Answer - B
`N^(3-)`, F^(-)` and `Na^(+)` (These three ions have `e^(-)=10` , hence they are isoelectronic)