Which one of the following species does not exist under normal conditions?

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

What is the bond order of $N_2$?

The spin-only magnetic moment value of $B_{2}^{+}$ species is $...... \times 10^{-2} \ BM$. (Nearest integer)
[Given : $\sqrt{3}=1.73$ ]

The molecular electronic configuration of $H_2^-$ ion is

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.