Classes Of Functional Groups
Organic Chemistry deals mostly with carbon and hydrogens, also called hydrocarbons, but those groups which replace hydrogen and bonds with carbon to give a characteristic nature, unique of their own, to the hydrocarbon they are attached to, are called functional groups. All the compounds belonging to a functional group undergo reactions in a similar pattern and are known to have similar physical and chemical properties.
Characteristics Of Functional Groups
In organic chemistry, we encounter a number of special substituent groups which are attached to the hydrocarbon backbone. These groups impart certain characteristics to the molecule of which it is a part of and thus, become the highlight of that particular molecule.
IUPAC Nomenclature
In Chemistry, IUPAC stands for International Union of Pure and Applied Chemistry which suggested a systematic naming approach for the organic and inorganic compounds, as in the beginning stage of nomenclature one single chemical compound was named in many ways by which lead to confusion. The need for this approach aroused as the number of chemical compounds newly discovered were increasing (approximately 32 million compounds) and the basic concept of nomenclature i.e. the trivial nomenclature and the derived system of nomenclature failed to overcome the challenge. It is an important task to name a chemical compound systematically and unambiguously which reduces lots of confusion about the newly reported compounds.
![### Structural Formula of a Hydrocarbon
This image displays the structural formula of a hydrocarbon. It consists of a chain of carbon (C) atoms with hydrogen (H) atoms attached. Here's a detailed transcription of the formula:
```
H H H
| | |
H—C—C—C—C—H
| | | |
H H CH2 H
|
CH3
```
### Explanation:
1. **Carbon Chain**:
- There are four carbon atoms in a single chain, connected by single bonds.
- Each carbon atom forms four bonds since carbon's valency is four.
2. **Hydrogen Atoms**:
- The hydrogen atoms (H) are bonded to the carbon atoms to satisfy each carbon's valence requirements.
- The first carbon (on the left) has three hydrogen atoms attached.
- The second carbon has two hydrogen atoms attached.
- The third carbon has two hydrogen atoms attached.
- The fourth carbon has one hydrogen atom attached and a CH3 group.
3. **Methyl Group**:
- A methyl group (CH3) is bonded to the fourth carbon atom.
This type of structural formula is fundamental in organic chemistry for understanding the constitution and configuration of molecules. It shows the exact arrangement of atoms and the bonds between them within a molecule.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F11cb493f-74d8-445b-bfd0-ead085c73a2d%2Fbf28abab-4edb-42a6-a88c-4f790816cd6d%2Flsdt38_processed.jpeg&w=3840&q=75)
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