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Forming Polar Bonds

  1. Jun 8, 2010 #1
    I had a question in a lab about which elements are least likely to form polar covalent bonds with hydrogen. From what I understand, what governs how polar a bond is, is the electronegativity of the element. The answer said that Carbon was the one which was least likely to form the bond, but using my periodic table I see that phosphorous has the same electronegativity as hydrogen.

    So shouldn't phosphorous share the bond most evenly? I've asked a couple other people and they say that phosphorous might be an exception because it can expand its octet...but that doesn't make sense to me.

    Thank you,

  2. jcsd
  3. Jun 9, 2010 #2


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    Are you sure you're remembering the question and elements correctly?

    Would you be able to list out the question in its entirety?
  4. Jun 10, 2010 #3


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    No, it doesn't make sense. P-H is fairly non-polar.
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