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(B) The dipole moment $(\mu)$ depends on both the electronegativity difference and the bond length between the carbon and the halogen atom. While fluo

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$CH_3Cl > CH_3F > CH_3Br > CH_3I$

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(B) The dipole moment $(\mu)$ depends on both the electronegativity difference and the bond length between the carbon and the halogen atom. While fluorine is the most electronegative,the $C-F$ bond length is very short,which reduces the dipole moment. In the case of $CH_3Cl$,the combination of high electronegativity and a relatively longer bond length results in the highest dipole moment. The order of dipole moments for methyl halides is $CH_3Cl > CH_3F > CH_3Br > CH_3I$.

Which of the following are arranged in the decreasing order of dipole moment?

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