The ion that is isoelectronic with `CO` is

Options

A. `CN^(Theta)`
B. `O_(2)^(o+)`
C. `O_(2)^(Theta)`
D. `N_(2)^(o+)`

Answer

A

Explanation

Isoeletronic species have same number of electrons
Electrons in `CO = 6+8 =14`
Electrons in `CN^(Theta) =6 +7 + 1 =14`
Electrons in ` O_(2)^(Theta) = 8 + 8 +1 = 17`
Electrons in `O_(2)^(o+) = 8 +8 -1 = 15`
Therefore, `CO` and `CN^(Theta)` are is isoelectronic .