The bond length has been defined by the distance shared by the covalently bonded atoms. C≡N (887 kJ/mol) has the longest bond followed by C=N and the shortest C-N.
What is the bond length?
Bond length is a parameter that defines the bond distance and measures the length between the bonded atoms. It is determined by bonded electrons.
The bond energy and bond length are directly related and hence the C≡N (887 kJ/mol) has the longest bond length because of high energy followed by C=N (615 kJ/mol) and the shortest C-N (305 kJ/mol).
Therefore, the order of bond length is C≡N > C=N > C-N.
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