Question

There are some species given below. $\left(i\right)O_2^{+}\left(ii\right)CO\left(iii\right)B_2\left(iv\right)O_2^{-}$

$\left(v\right)N{O}^{+}\left(vi\right)H{e}_2^{+}\left(vii\right)C_2^{2+}\left(viii\right)C{N}^{-}$

$\left(ix\right)N_2^{-}$

Total number of species which have their fractional bond order.

Answer 1

$\begin{array}{cccccc}\text{No.}& \text{Species}& \text{Total no.}& \text{Bonding electrons}& \text{Antibonding electrons}& \text{Bond order}\\ \text{(i)}& O_2^{+}& 15& 10& 5& 2.5\\ \text{(ii)}& CO& 14& 10& 4& 3\\ \text{(iii)}& B_2& 10& 6& 4& 1.0\\ \text{(iv)}& O_2^{-}& 17& 10& 7& 1.5\\ \text{(v)}& N{O}^{+}& 14& 10& 4& 3\\ \text{(vi)}& H{e}_2^{+}& 3& 2& 1& 0.5\\ \text{(vii)}& C_2^{++}& 10& 6& 4& 1.0\\ \text{(viii)}& C{N}^{-}& 14& 10& 4& 3.0\\ \text{(ix)}& N_2& 15& 10& 5& 2.5\end{array}$