Which of the following molecules is paramagnetic?

Find out the bond order in $He_2, He_2^{+}, O_2$ and $O_2^{+}$ respectively.

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?

Identify the correct increasing order of energies of molecular orbitals for the $F_2$ molecule.

Out of the following,which has the smallest bond length?

Provide the electron configuration,magnetic property,bond order,and energy level diagram for the carbon molecule $(C_2)$.