CBSENEETJEEClass 10

What is a functional group?

Answer

A functional group is an atom or group of atoms in a molecule that determines the chemical properties of an organic compound.

The working

Definition

A functional group is a specific atom or group of atoms that gives characteristic chemical properties to a compound.

Role

It is the reactive part of the molecule and largely decides how the compound behaves in reactions.

Examples

Common functional groups include hydroxyl (–OH), aldehyde (–CHO), carboxyl (–COOH), and ketone (>C=O).

Importance

Compounds with the same functional group show similar chemical behaviour and form a homologous series.

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