jonahtrujillo0 jonahtrujillo0

06-03-2017
Chemistry

contestada

Which molecule has polar bonding and is nonpolar?
1) H2O

2) BF3

3) NH3

4) NCl3

5)CH2Cl2

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AbhiGhost AbhiGhost

06-03-2017

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.

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kobenhavn kobenhavn

20-05-2019

Answer: [tex]BF_3[/tex]

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: [tex]BF_3[/tex]

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

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