The extent of `pi` bonding order in `M-O` is (M=central atom) :

Options

A. `CO_(3)^(2-)=NO_(3)^(-)=BO_(3)^(3-)`
B. `CO_(3)^(2-)gtNO_(3)^(-)gtBO_(3)^(3-)`
C. `BO_(3)^(3-)gtCO_(3)^(2-)gtNO_(3)^(-)`
D. `NO_(3)^(-)gtCO_(3)^(2-)gtBO_(3)^(3-)`

Answer

D

Explanation

Across the period, as size of C.A.`darr`, tendency to form `pi` and `uarr`.