Among the following groupings which represents the collection of isoelectronic species?

Options

A. `NO^(+),C_(2)^(2),O_(2)^(-),CO`
B. `N_(2),C_(2)^(2),CO,NO`
C. `CO, NO^(+),CN^(-),C_(2)^(2-)`
D. `NO,CN^(-),N_(2),O_(2)^(-)`

Answer

C

Explanation

The species `CO, NO^(+), CN^(-) and C_(2)^(2-)` contain 14 electrons each.