Which of the following is paramagnetic ?
$NO^+$
$CO$
$O_2^-$
$CN^-$
The bond order is not three for
Among the following species, identify the pair having same bond order $CN^-, O_2^-, NO^+, CN^+$
According to the molecular orbital theory, the bond order in ${C_2}$ molecule is
Which of the following facts given is not correct ?
$(I)$ Bond length order : $H^-_2 = H^+_2 > H_2$
$(II)\, O^+_2 ,NO,N^-_2$ have same bond order of $2 \frac{1}{2}$
$(III)$ Bond order can assume any value including zero upto four
$(IV)\, NO^-_3$ and $BO^-_3$ have same bond order for $X - O$ bond (where $X$ is central atom)
The paramagnetic nature of oxygen can be explained by