Polar vs. Non-polar bonds

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Ryan Juncker 3D
Posts: 51
Joined: Wed Sep 18, 2019 12:18 am

Polar vs. Non-polar bonds

Postby Ryan Juncker 3D » Sun Nov 17, 2019 12:02 pm

Is there a way to be able to tell for sure whether a bond (not molecule) is polar or non-polar without being able to see the electronegativity of both atoms?

eduardomorales5
Posts: 53
Joined: Fri Aug 30, 2019 12:15 am

Re: Polar vs. Non-polar bonds

Postby eduardomorales5 » Sun Nov 17, 2019 12:25 pm

You could compare the sizes of the two atoms and the number of protons that each atom has. Larger atoms have more orbitals and thus a greater amount of shielding electrons. The effective nuclear charge would not be as great as it would be for smaller atoms, and will be less able to pull electrons towards it, thus having a smaller electronegativity. More protons means a stronger ability to pull electrons towards it, thus having a larger electronegativity.

Aliya Jain 2B
Posts: 78
Joined: Wed Sep 11, 2019 12:16 am

Re: Polar vs. Non-polar bonds

Postby Aliya Jain 2B » Sun Nov 17, 2019 3:55 pm

You can also look at molecular geometry. Sometimes certain structures indicate polarity. For example since h2o has a bent structure, it is also a polar molecule.


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