Which bond is strongest? (please help final tomorrow)

Question

a)carbon-nitrogentriple bond

b)carbon-nitrogen double bond

c)carbon-carbon triple bond

the answer is A but how would I know please explain step by step

Answer 1

Actually

on wikipedia

Answer 2

The answer is clear if u make resonance structures of the first bond.(I hope u know wt it it.)

See, that there is a lone pair on Nitrogen, and when the Carbon nitrogen bond is made, this lone pair oscillates between Carbon & Nitrogen. Thus there are two resonance structures.

And now we know that this structure is stabilised by resonance.

The more its stable, the higher is bond Strength.

Also, u must see that overlap in orbitals is maximum in triple bolnd....so its stronger...

I hope, this will help you....and if it does, please vote me out as best answer  ;)