A naming system is a collection of rules developed by the International Union of Pure and Applied Chemistry (IUPAC) to issue systematic names to molecules or chemical compounds. Generally, atoms lower their energy when they combine with molecules. The atoms then change their behavioural pattern as per the situation. Their functioning does not limit to valence shells. It does require different names to define themselves in a periodic table. The IUPAC defines the formal names to address and use the molecules. Often chemists or any student aspiring in the field of science searches on the project. Now let’s discuss this more in brief. 

What is the naming system?

A naming system is a set of formal names that define the nomenclature to address molecules. Thus, before you name compounds, you must first learn to provide names to their elements. The elements are generally two case letters i.e., the first letter is a capital letter and the second is a small one. For instance, Lithium- Li, Magnesium- Mg, Nickel- Ni, and so on. Although, the growing new discoveries of compounds the need for a systematic name rose every day. 

What is the aim of the naming system?

A naming system is designed to refer to chemical names for single substances. However, in some cases, alternative names also get acceptance from these substances. It delivers information on chemical compounds. 

Classification of Chemical name compounds –

The chemical name of molecules and compounds classified into the following things –

• Atoms of molecular bonds – The carbon and hydrogen bonds in a molecule are called organic compounds. The organic and inorganic compounds have a different naming system from each other. Although, changed atoms, positively and negatively charged atoms also define the naming system. 
• Structure of Molecule- In a long chain organic compounds provide the unique name also if the molecules bonded in the chain have similar atoms. 
• Bond of atoms- The covalent, metallic, and ionic bonds have different categories of atoms which in turn have different names. 

Types of the naming system-

The International Union of Pure and Applied Chemistry defines two types of the naming system i.e., Organic chemistry and Inorganic chemistry. 

• Organic chemistry naming system

Organic chemistry is a concept of organic chemical compounds. It defines a unique name for conceivable organic compounds to build an accurate structural formula. The method is set to avoid the use of long and complex names while having a communication. However, many chemists do not follow the official recommendations and guidelines. In many cases, the IUPAC naming system has simpler terms than that of traditional ones. For instance, ethanol is an IUPAC name that sounds easier than ethyl alcohol. 

The organic chemistry naming system is very easy to identify when addressing the molecules. You can easily learn and look at them when preparing for your entrance exams. 

Although, the common name is often short and clear and hence preferred everywhere. These systematic names extract from original compounds. Thus, the long-stretched names are difficult to spell in a communication. 

• Inorganic Chemistry

An inorganic Chemistry of naming system is an ideal method of addressing inorganic compounds. It helps to deliver the information of such compounds from distinct formulas. The IUPAC defines the naming system both for organic and inorganic chemistry. The inorganic molecular compounds  identifies with prefixes in an element. For instance, H2O (water) is known as dihydrogen monoxide. Although, the naming system is commonly used by chemists. 

What is a Trivial naming system?

A Trivial naming system is an irregular approach to identifying organic compounds by providing names. Often, there is no set of rules for speaking and writing in a trivial naming system. It generally simplifies organic compound names through the process. An example of a trivial naming system is toluene, acetic acid, and so on. The compounds are even short and clear when put in use. Thus, the trivial system is still in use today. 

Example- A tartaric Acid is a form of carboxylic acid as per the Trivial naming system obtained from tamarind. Thus, 2,3-dihydroxy-1,4-Butanedioic acid will be the name of tartaric acid in the IUPAC naming system. 

IUPAC naming system 

The International Union of Pure and Applied Chemistry (IUPAC) issued a certain set of rules for the naming system of compounds. Simply follow them to develop a unique name for the molecules or sub-compounds. 

1. Longest chain rule- It is necessary to address the parent hydrocarbon subsequently. The chain that forms the compounds is generally longer even if it is straight or in other shapes. 
2. Lowest Locants set- The carbon atoms in the hydrocarbon chain must assign natural numbers. Also, it should ensure that the lowest number belongs to carbon atoms carrying substituents.
3. Numerous cases of the same substituent- The total number of similar substituents in organic compounds identified by the Prefixes like tri, di, and so on.
4. Identifying non-identical substituents- The organic compounds carrying similar substituents arranges the proportional substituent in alphabetical format.
5. Identification of proportional substituents present at the same place- When two substituent groups are places in a similar position, the substituents are then identified in ascending alphabetical order. 
6. Naming composite substituent- Some composite substituents of organic compounds consisting of divaricate structures should be named substituted alkyl groups. On the second hand, the carbon links to its group number one. Thus, the divaricate and composite substituents should include brackets to the IUPAC naming system. 

Conclusion 

The naming system derived by the International Union of Pure and Applied Chemistry unambiguously justifies the different names of molecules. The write-up has covered the meaning, concept, classification, and examples related to it. It ensures that the chemical name does not leave any discrepancy. Also, it aims at ensuring a name for a single substance. Although, organic and inorganic chemistry defines both systematic and disorganised approaches to the naming system. Eventually, it identifies all types of compounds depending on the audience.