Question

Write the IUPAC name of the compound $C{H_2} = CH - CN$.

Answer 1

The organic chemistry nomenclature IUPAC is a way of classifying organic chemical compounds recommended by the International Union of Pure and Applied Chemistry in chemical nomenclature (IUPAC). The stem name, prefix, and suffix are the three pieces that make up the IUPAC nomenclature for organic compounds.

Complete answer:
The compound’s $C{H_2} = CH - CN$ IUPAC name is 2-Propenenitrile (Prop-2-ene-nitrile).
Here the longest chain contains three carbon atoms.
Nitrile is the functional group present.
According to the IUPAC Guidelines, compound nomenclature must include the following steps:
The Longest Chain Rule states that the parent chain of a particular molecule should be the longest chain of carbon atoms possible, and it should be in the form of a straight chain or any other shape possible.
The Lowest Set of Locants: The carbon atoms in the parent chain must be numbered using natural numbers, starting with the least number of the carbon atom carrying the substituents and working backwards.
Multiple instances of the same substituent: Prefixes such as di, tri, and others are used to indicate the total number of the same substituent group in a given chemical.
Naming of distinct substituents: The suitable substituents are listed alphabetically according to the IUPAC nomenclature of compounds in organic compounds with multiple substituents.
Various substituents at the same location are given different names: The substituents are named in ascending alphabetical order when two distinct substituent groups are present at the same location in the molecule.

Note:
However, scientists do not always follow the IUPAC nomenclature recommendations because some compounds have exceedingly long and tiresome names according to the IUPAC nomenclature criteria. These compounds are given well-known names.