Which one of the following groups represent a collection of isolectronic species ? (At.no `Cs = 55, Br = 35)`

Options

A. `Ca^(2+), Cs^(2+),Br`
B. `Na^(+), Ca^(2+), Mg^(2+)`
C. `N^(3-), F^(-), Na^(+)`
D. `Be, Al^(3+), Cl^(+)`

Answer

C