The bonding in the species HeH can be sutuded in a way similar to that of the $\mathrm{H}_2$. The correct statement(s) is(are):

• Correct answer
  A

  The dipole moment of HeH is larger than that of $\mathrm{H}_2^{+}$.
• B

  Among $\mathrm{HeH}, \mathrm{HeH}^{+}$, and $\mathrm{HeH}^{2+}$, the species that is most stable is $\mathrm{HeH}^{2+}$.
• Correct answer
  C

  Among $\mathrm{HeH}, \mathrm{HeH}^{-}$, and $\mathrm{HeH}^{+}$, the system with the smallest bond length is $\mathrm{HeH}^{+}$.
• Correct answer
  D

  $\mathrm{HeH}^{+}$has symmetrical distribution of electrons about the bond axis.

Hence, the correct answer is options: 'A', 'C', 'D'.