Which of the following molecular orbitals has the maximum number of nodal planes?

For $F_2$ and $OF$ molecules,consider the following statements:
$(a)$ Bond order for both is one
$(b)$ $OF$ is paramagnetic but $F_2$ is diamagnetic
$(c)$ $F_2$ is more likely to dissociate into atoms than $OF$
$(d)$ Both have greater number of electrons in $BMO$ than that in $ABMO$
Which of the following statements are true $(T)$ or false $(F)$ respectively?

According to molecular orbital theory,the paramagnetism of the $O_2$ molecule is due to the presence of

In which of the following sets is the sum of bond orders of the three species maximum?

If the bond order of $CO$ is $x$,the bond order of $O_2^{2-}$ ion is

Identify a molecule which does not exist.