Less contributing structure of nitroethene is :

Most contributing structure in introethene is :

Least contributing resonating structure of nitroethene is :

Least contributing resonating structure of nitroethene is:

The total number of contributing structures for hyperconjugation in propene is

How many of the following intermediates heve at least one contributing structure in which all atoms have their octet complete ?

Phenate ion has more number of contributing structures than benzoate ion, but still benzoic acid is a stronger acid. Explain.