Among the following ions the `ppi-dpi` overlap could be present in

Options

A. `NO_(3)^(Theta)`
B. `PO_(3)^(Theta)`
C. `CO_(3)^(2-)`
D. `NO_(3)^(Theta)`

Answer

B

Explanation

Only in `PO_(4)^(3-)` has 3d orbitals so it can form only `(ppi -dpi)` bond
Structure of `PO_(4)^(3-)` is` :underset("One"(p pi -dpi)bond)underset(uarrO^(Theta))underset(|)overset(O)overset(|)(O=P-O^(Theta))`
`EC` of `P` in ground state ` =3s^(2) 3p^(3)`
`EC` of `P` in excited state `=3s^(1) 3p^(3) 3d^(1)`