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A question in Lewis structure?

  1. Nov 25, 2009 #1
    a question in Lewis structure???

    I know that Lewis structure is so easy to discuss ..but I have this compound :
    SnCl2
    when I drew the Lewis structure of its , I had to make Double bond between the Cl & Sn
    ..but a teacher told me once that when the Cl is not the central atom it can just make a single bond ..
    so that it looks so weird for me !!!!!!!!!!!!!
    Is it an abnormal case -like PO4- ???
    what is the real structure ???
     
  2. jcsd
  3. Nov 25, 2009 #2

    alxm

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    Re: a question in Lewis structure???

    One free electron pair on tin, single bonds to the chlorines which have full octets.
    (The octet rule doesn't apply to tin.)
     
  4. Nov 25, 2009 #3

    Borek

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    Staff: Mentor

    Re: a question in Lewis structure???

    More precisely, octet rule works mainly for the second period of periodic table.

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  5. Nov 27, 2009 #4
  6. Nov 27, 2009 #5

    Borek

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    Re: a question in Lewis structure???

    Don't worry - there is no obvious border where it works, where it doesn't. Octet rule and Lewis structures are only a simplification of the reality, no wonder they regularly fail.

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  7. Nov 27, 2009 #6
  8. Nov 28, 2009 #7
    Re: a question in Lewis structure???

    actually ..in MY book they are talking about the octet rule as a main rule
    I mean.. it works with all the compounds except some odd of them
    & I still do not know the structure of (SnCl2):shy:
     
  9. Nov 28, 2009 #8

    Borek

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    Re: a question in Lewis structure???

    Let me guess - that's your first year of chemistry?

    --
     
  10. Nov 28, 2009 #9
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