Question

What is the correct name of the longest chain of 5 carbon atoms?

Answer 1

Hint: The International Union of Pure and Applied Chemistry (IUPAC) nomenclature of organic chemistry is a method of naming organic chemical compounds that is recommended in chemical nomenclature (IUPAC). It's in the Journal of Organic Chemistry's Nomenclature (informally called the Blue Book). Any conceivable organic compound should, in theory, have a name that can be translated into an unambiguous structural formula. Inorganic chemistry has its own IUPAC nomenclature.

Complete answer:
The International Union of Pure and Applied Chemistry (IUPAC) nomenclature of organic chemistry is a method of naming organic chemical compounds that is recommended in chemical nomenclature (IUPAC). It's in the Journal of Organic Chemistry's Nomenclature (informally called the Blue Book). Any conceivable organic compound should, in theory, have a name that can be translated into an unambiguous structural formula. Inorganic chemistry has its own IUPAC nomenclature.
The official IUPAC naming guidelines are not always followed in practise, except where it is appropriate to provide an unambiguous and absolute meaning to a compound, to avoid long and repetitive names in normal communication. In certain cases, such as ethanol instead of ethyl alcohol, IUPAC names are simpler than older names. They are easier to understand for relatively simple molecules than non-systematic names, which must be learned or looked over. The generic or trivial name, on the other hand, is often much shorter and simpler, and thus preferred. These non-systematic names are sometimes derived from the compound's original source. Long names can also be less understandable than structural formulas.
You must first memorise a few simple names before you can call organic compounds. These names are mentioned in the section on alkane naming. In general, the number of carbons in what you've designated as the parent chain is reflected in the base part of the term. The type(s) of functional group(s) present on (or within) the parent chain is reflected in the suffix of the name. Substituents are other entities that are connected to the parent chain.
Number of carbons – name
Meth – 1
Eth – 2
Prop – 3
But – 4
Pent – 5
Hex – 6
Hence, the correct name of the longest chain of 5 carbon atoms is Pent

Note:
The substituents, carbon chain length, and chemical affix are the three essential components of IUPAC organic nomenclature. All functional groups bound to the main carbon chain are substituted. The main carbon chain is the longest continuous carbon chain possible. The chemical suffix identifies the molecule's form. For example, the ending ``ane in "hexane" denotes a single bonded carbon chain.