Question

new

Select the correct definition for monohalogenated alkane. O A monohalogenated alkane is a haloalkane containing only one halogen atom. A monohalogenated alkane is a haloalkane containing several identical halogen atoms. A monohalogenated alkane is a haloalkane containing one halogen atom at each end of the chain.

Answer 1

Concepts and reason

Halogenation:

Halogenation is an organic reaction which involves the addition of one or more halogens to a compound.

Fundamentals

Halogenation of alkene:

It is an addition reaction in which halogens add to a pi-bond system. It proceeds through a carbocation intermediate.

A monohalogenated alkane can be formed by two processes:

1.Monohalogenation of alkene:

Only one halogen gets added to the pi bond system. That is, an alkene.

Example:

The addition of hydrogen bromide to an alkene gives a product substituted with one halide, forming a mono-bromo substituted alkane.

2.Monohalogenation of an alkane:

Example:

The addition of ${\rm{C}}{{\rm{l}}_{\rm{2}}}$ to an alkane gives a mono-chloro substituted alkane by substituting different hydrogen environments.

Monohalogenated alkane:

An alkane substituted with one halogen atom instead of a hydrogen atom at any position in the compound.

A monohalogenated alkane is a haloalkane containing only one halogen atom - correct statement.

A monohalogenated alkane is a haloalkane containing several identical halogen atoms - incorrect statement.

A monohalogenated alkane is a haloalkane containing one halogen atom at each end of the chain - incorrect statement.

Ans: