Chemical Bonding - Result Question 8

####8. The molecule which has zero dipole moment is

(1989, 1M)

(a) $CH _2 Cl _2$

(b) $BF _3$

(c) $NF _3$

(d) $ClO _2$

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Answer:

Correct Answer: 8. (b)

Solution:

  1. $BF _3$ has triangular planar arrangement.

Three identical vectors acting in outward direction at equal angles in a plane cancel each other giving zero resultant, hence non-polar.



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