Question

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

• A. $CH_{3}Cl,CH_{3}Br,CH_{3}F$
• B. $CH_{3}Cl,CH_{3}F,CH_{3}Br$
• C. $CH_{3}Br,CH_{3}Cl,CH_{3}F$
• D. $CH_{3}Br,CH_{3}F,CH_{3}Cl$

Answer 1

Answer: (B)

$CH_{3}Cl,CH_{3}F,CH_{3}Br$

Answer 2

: The values of dipole moments of methyl halides:

$CH_{3}F - 1.51D;$ $CH_{3}Cl - 1.56D;$

$CH_{3}Br - 1.4D;$ $CH_{3}I - 1.29D$

$\therefore CH_{3}Cl > CH_{3}F > CH_{3}Br > CH_{3}l$