Which of the following sets of species have similar bond order?

Stability of the species $Li_2$, $Li_2^-$, and $Li_2^+$ increases in the order of:

Bond order of $He_{2}$, $He_{2}^{+}$ and $He_{2}^{2+}$ are respectively:

Which of the following options represents the correct bond order?

Which of the following statements is correct for the peroxide ion $(O_2^{2-})$?
$A.$ It has completely filled $\pi^*$ antibonding molecular orbitals.
$B.$ It is diamagnetic.
$C.$ It has a bond order of one.
$D.$ It is isoelectronic with Neon.

Which of the following is not paramagnetic?