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NH3 is a 3D object (like an open umbrella) but BF3 is all on one plane in a triangle.
In the second case the dipoles cancel each other

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10y ago
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1mo ago

Ammonia (NH3) is polar because it has a lone pair of electrons on the nitrogen atom, causing an uneven distribution of charge and resulting in a net dipole moment. In contrast, BF3 is not polar because the boron atom in BF3 is surrounded by three fluorine atoms that all pull electron density away from the boron atom equally, resulting in a symmetrical shape and no net dipole moment.

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Q: Why ammonia molecule is polar but BF3 is not?
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Related questions

Is bf3 a nonpolar or polar molecule?

BF3 is a nonpolar molecule because the boron atom is surrounded by three fluorine atoms arranged in a trigonal planar geometry, creating a symmetric distribution of charge that cancels out any dipole moment.


Is BF3 nonpolar covalent or polar covalent?

BF3 is a nonpolar covalent molecule because the electronegativity difference between boron and fluorine is too small to create a significant dipole moment.


What is an example of a polar molecule other than water?

Ammonia (NH3) is an example of a polar molecule. Its trigonal pyramidal shape results in an unequal distribution of charge, making it a polar molecule.


Why does BF3 not mix with H2O?

Boron trifluoride (BF3) does not mix with water (H2O) because BF3 is a nonpolar molecule, whereas water is a polar molecule. Polar molecules are attracted to other polar molecules due to their opposite charges, whereas nonpolar molecules are not attracted to polar molecules. This difference in polarity prevents the two substances from mixing.


Is H plus polar or non polar?

If you think to ammonia molecule, this is polar.


Is ammonia mlecule NH3 more polar than water molecule?

No, water molecule (H2O) is more polar than ammonia (NH3) because of the greater difference in electronegativity between oxygen and hydrogen atoms in water molecule compared to nitrogen and hydrogen atoms in ammonia molecule. Water has two polar covalent bonds while ammonia has only one.


Why is ammonia polar covalent?

Ammonia is not a polar covalent molecule; it is a polar molecule. The nitrogen in ammonia is more electronegative than the hydrogen atoms, which leads to an uneven distribution of electrons in the molecule, creating a partial negative charge on the nitrogen and partial positive charges on the hydrogen atoms.


Is ammonia is soluble in water or a polar molecule?

Ammonia form in water ammonium hydroxide - NH4OH.


What happens when BF3 is reacted with ammonia?

When BF3 is reacted with ammonia, the ammonia coordinates with the boron atom in BF3 to form an adduct called ammonia borane or NH3-BF3. This adduct is a stable compound that is used in various chemical reactions and hydrogen storage applications.


Is BF3 non polar covalent polar covalent or ionic bond?

BF3 has a nonpolar covalent bond because the electronegativity difference between boron and fluorine is not significant enough to create a polar covalent bond. In a nonpolar covalent bond, electrons are shared equally between the atoms involved.


Is ammonia a polar compound?

Yes, ammonia (NH3) is a polar compound. Although it has a pyramidal shape, the asymmetrical distribution of the nitrogen and hydrogen atoms results in an uneven charge distribution, creating a polar molecule with a net dipole moment.


Is ammonia soulible in hexane?

No, ammonia is not soluble in hexane. Ammonia is a polar molecule while hexane is nonpolar, so they do not mix well together.