Question

are CN and O-N-O act as ambident nucleophiles ?

Answer 1

yes because in case of CN ..C As well as N can act as a donor atom ....and in case of O-N-O both atom can behave as a donor atom

Answer 2

Answer : Yes, $CN^-$ and $ONO$  act as ambident nucleophiles.

Explanation :

Ambident nucleophiles : These are those nucleophiles that has two nucleophilic centres. That means, the negative charge is delocalized by resonance over two unlike atoms.

Yes, $CN$ is an ambident nucleophile because in cyanide there are two nucleophilic centres which are carbon and nitrogen. That means, both are donor atoms.

Yes, $ONO$ is an ambident nucleophile because in cyanide there are two nucleophilic centres which are nitrogen and oxygen. That means, both are donor atoms.