Question

There are some species given below.

$\begin{array}{cccc}\left(i\right)O_2^{+}& \left(ii\right)CO& \left(iii\right)B_2& \left(iv\right)O_2^{-}\\ \left(v\right)N{O}^{+}& \left(vi\right)H{e}_2^{+}& \left(vii\right)C_2^{2+}& \left(viii\right)C{N}^{-}\\ \left(ix\right)N_2^{-}& & & \end{array}$

Total number of species which have their fractional bond order.

Answer 1

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