Question

The correct order of dipole moment in the

following

1) CH3Cl < CH3Br < CH3I < CH3F

2) CH3I < CH3Br < CH3F < CH3Cl

3) CH3I < CH3Br < CH3Cl < CH3F

4) CH3Br < CH3I < CH3Cl < CH3F

Answer 1

Explanation:

What is a dipole moment?

A dipole moment arises in any system in which there is a separation of charge. Dipole moments arise in ionic bonds as well as in covalent bonds. Dipole moments occur due to the difference in electronegativity between two chemically bonded atoms. It is a vector quantity that indicates it has magnitude as well as definite directions.

The dipole moment depends on the electronegativity of halogens.

Among the Cl, Br, and I halogens, F has the highest electronegativity. In CH3F, due to less distance between F and C, dipole moment decreases.

CH3Cl > CH3F > CH3Br > CH3I.

Therefore, CH3Cl will have the maximum dipole moment.

 

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