polarity

(Polar molecules, Non-polar molecules, etc.)

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Clarissa Nava 3H
Posts: 60
Joined: Fri Sep 29, 2017 7:05 am

polarity

Postby Clarissa Nava 3H » Sat Dec 08, 2018 8:05 pm

if the central atom has a positive or negative charge does that determine the polarity?

Harshita Talkad 4L
Posts: 60
Joined: Fri Sep 28, 2018 12:16 am

Re: polarity

Postby Harshita Talkad 4L » Sat Dec 08, 2018 10:10 pm

Polarity is determined by the unequal sharing of electrons, so a molecule would be polar if the atoms that it is made of do not have the same electronegativity and do not cancel each other out with dipoles in opposite directions.

Jessica Castro 2H
Posts: 60
Joined: Fri Sep 28, 2018 12:29 am

Re: polarity

Postby Jessica Castro 2H » Sat Dec 08, 2018 10:22 pm

Polarity is also determined on whether or not the dipoles cancel. Tip: try to know the trend of electronegativity to determine if a dipole exists or not.

Example: XeF4 has two lone pairs, but the two lone pairs cancel. Therefore XeF4 is nonpolar.

Hope this helps!


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