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Topic: Bonding in PF6  (Read 6513 times)

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Offline Hello12

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Bonding in PF6
« on: November 23, 2008, 07:53:48 AM »
Phosphurus is in Group 5 and has 5 outer electrons. How is it possible for it to form 6 single bonds with fluorine. Is is because Fluorine is very electronegative?
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Offline Astrokel

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Re: Bonding in PF6
« Reply #1 on: November 23, 2008, 10:10:20 AM »
which period is phosphorus in and have you heard of expansion of octet structure?
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Offline Hello12

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Re: Bonding in PF6
« Reply #2 on: November 23, 2008, 10:45:39 AM »
ahh its in period 3, its electronic config is 1s2,2s2,2p6,3s2,3p3. So it must use 1 electron from 2P, is that correct?
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Offline Astrokel

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Re: Bonding in PF6
« Reply #3 on: November 23, 2008, 03:32:04 PM »
Not right on the 2p idea but you are correct that it is in period 3. Also if you notice period 3 elements have vacant 3d orbitals that allow more bonds than just using 5 outer electrons in phosphorus case. This is possible through dative bonding.
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Offline Hello12

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Re: Bonding in PF6
« Reply #4 on: November 24, 2008, 12:05:36 PM »
Thanks for that i forgot about dative bonding :P
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