Which of the following does not have triple bond between the atoms?

Which of the following does not have triple bond between the atoms?
  1. $N_2$
  2. $CO$
  3. $NO$
  4. $\mathrm{C}_2^{2-}$

Solution

Nitric oxide (NO) has 11 electrons in its valence shells and its bond order is 2.5 . Hence, it does not contain triple bond between the atoms.

Asked in: AP EAMCET 2015

Practice more Chemical Bonding and Molecular Structure questions on Aicharya