Give the structure of the product obtained when cyclopropene loses a proton. Will the product be aromatic or not?

not aromatic

Explanation:

Cyclopropene -

as the compound is is made to lose a proton, and gains a negative charge on its ring,

Now, The ring can become aromatic or anti - aromatic depending on the number of π electrobns,

According to Huckel 's rule,

The cyclic compounds with (4n+2) π electrons, where, n = 0, 1, 2, 3 ..., are considered to be aromatic in nature,

And the cyclic compounds with (4n) π electrons, where, n = 1, 2, 3 ..., are considered to be anti - aromatic in nature.

Now, for the cyclopropene structure, the number of π electron are equal to 4, 2 from the double bond and 2 from the negative charge.

Therefore, the compound becomes not aromatic or anti - aromatic.