December 13, 2019, 04:12:15 PM
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Topic: Fast method to determine if a compound is polar or non polar  (Read 120 times)

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Offline kooryan

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Fast method to determine if a compound is polar or non polar
« on: November 23, 2019, 01:21:01 AM »
I am part of my highschool’s science bowl team, and whenever a question where it gives you a series of compounds, and asks to determine which compounds are polar or non polar, the only way - as of now - for me to determine whether each compound is polar or non polar is to draw the lewis structure for each compound as fast as I can. I was wondering if there was any “shortcut,” or tips available that chemists use to determine if a compound is polar/non-polar at first glance (unless, of course, drawing a lewis structure is the only way to determine when only given pen and paper - besides using electronegativity).

An example question is “which of the following molecules are polar?”

1. BrF5
2. PF5
3. SF5

Offline AWK

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Re: Fast method to determine if a compound is polar or non polar
« Reply #1 on: November 23, 2019, 02:08:31 AM »
SF5 does not exist. See:Wikipedia - Disulfur_decafluoride
AWK

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