Question

define functional group

Answer 1

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- FUNCTIONAL GROUP -

A functional group is a portion of a molecule that is a recognizable/classified group of bound
atoms. In organic chemistry it is very common to see molecules comprised mainly of a carbon
backbone with functional groups attached to the chain. The functional group gives the molecule
its properties, regardless of what molecule contains it*; they are centers of chemical reactivity.

Answer 2

$\huge \mathfrak {Answer:-}$

Functional group is an atom or a group of atom, which is bonded to carbon chain and it defines the chemical property of the organic compound.

$\bold{Example:-}$

OH is an alcohol, CHO is an aldehyde etc.

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