Q.
Which of the following has been arranged in order of decreasing dipole moment ?
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a
CH3Cl > CH3F > CH3Br > CH3I
b
CH3F > CH3Cl > CH3Br > CH3I
c
CH3Cl > CH3Br > CH3I>CH3F
d
CH3F >CH3Cl > CH3I> CH3Br
answer is A.
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Detailed Solution
Dipole moment depends on the electronegativity of the elements as it is product of charge on one of the ions and the distance between them. Dipole moment of CH3Cl is greater than CH3F due to more charge separation.
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