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AbhiGhost

2.) BF3 is symmetrical. Resultant of dipole moment of two B-F cancels with the dipole of third B-F bond. Hence the net dipole moment is zero and molecule is non-polar.

Answer: \(BF_3\)

Explanation:

A polar covalent bond is defined as the bond which is formed when there is a difference of electronegativities between the atoms. It is also defined as the bond which is formed due to the unequal sharing of electrons between the atoms.

If a molecule with polar covalent bonds is symmetrical in nature, it cancels out the dipole moments and thus the molecule becomes non polar. Example: \(BF_3\)

If a molecule with polar covalent bonds is asymmetrical in nature, dipole moments do not cancel and thus the molecule remains polar. Ex:\(H_2O\), \(NH_3\), \(NCl_3\) and \(CH_2Cl_2\)

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