What is the initial step to start the Markovnikov addition mechanism?

Hydrogen bromide provides an electrophile (

H^{+}

) which attacks the double bond to form carbanion.

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Hydrogen bromide provides a nucleophile (

H^{+}

) which attacks the double bond to form a carbocation.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Hydrogen bromide provides an electrophile (

H_{2}^{+}

) which attacks the double bond to form carbocation.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

None of these.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B Hydrogen bromide provides an electrophile ( $H^{+}$ ) which attacks the double bond to form carbanion.
It can be seen in the above shown mechanism that carbocation forms in the reaction.
Hence, the correct option is A.

Suggest Corrections

Similar questions

Q. Consider the addition of

H B r

to 3,3-dimethylbut-1-ene as shown below :

Which of the following represents correct mechanistic explanation for the formation of above product?

Q. Assertion :Alkenes undergo electrophilic addition whereas aldehydes and ketones undergo nucleophilic addition. Reason: In alkenes the double bond joins two carbon atoms and there is no resultant polarity. In carbonyl compounds, the carbonyl group is highly polar and the high partial positive charge on the C atom makes it subsceptible to nucleophilic attack.

Q. Assertion :Alkenes usually undergo electrophilic addition reaction at carbon-carbon double bond. Reason: Electrophilic addition at double bond produces carbocation intermediate.

When electrophile attacks on carbon atom of the benzene to form carbonium ion, the hybridsation of that 'C' changes from

The most characteristic reaction of aldehyde and ketones is nucleophilic addition to carbon oxygen double bond. Aldehyde and ketones are easily susceptible to nucleophilic addition because of structural features. The trigonal planar arrangement of groups around the carbonyl carbon atom means that the carbonyl carbon atom is relatively open to attack from above and below the plane of carbonyl group. The partial positive charge on the carbonyl atom means that it is especially susceptible to attack by a nucleophile

Aldehyde reacts with $2^{\circ}$ amines to form

Join BYJU'S Learning Program

What is the initial step to start the Markovnikov addition mechanism?

The correct option is B Hydrogen bromide provides an electrophile (H+) which attacks the double bond to form carbanion.It can be seen in the above shown mechanism that carbocation forms in the reaction.Hence, the correct option is A.

The correct option is B Hydrogen bromide provides an electrophile ( $H^{+}$ ) which attacks the double bond to form carbanion.
It can be seen in the above shown mechanism that carbocation forms in the reaction.
Hence, the correct option is A.