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Q.

The resultant dipole moment (μ) of two compounds NOF and NO2F is 1.81 D and 0.47 D respectively. Which dipole moment do you predict?

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a

0.47 D for NO2F and 1.81 D for NOF

b

For both NO2F and NOF, dipole moment (μ) is 0.47 D

c

1.81 D for NO2F and 0.47 D for NOF

d

For both NO2F and NOF, dipole moment (μ) is 1.81 D

answer is B.

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Detailed Solution

  • NOF has bent shape and NO2​F has trigonal planar shape with asymmetrical distribution of charge on central atom. 
  • The dipole moment in case of NO2​F is less than NOF due to its symmetrical shape. 
  • Hence, dipole moment of NO2​F should be 0.47 D and that of NOF should be 1.81 D.
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