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  1. Saad (سعد)

    Chemistry: Post your doubts here!

    ... Doesn't SO2 have two lone pairs?
  2. Saad (سعد)

    AS Chemistry P2 Prep.

    As-Salaamu 'Alaykum; http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20%289701%29/9701_s04_ms.pdf They accepted both dehydration and elimination in question 4 part (c) in that MS. But never trust examiners. >.> Just write both.
  3. Saad (سعد)

    Chemistry: Post your doubts here!

    O_O I understand now... almost. Jazak Allah; thanks a lot that really made things simpler. Just one thing; Isn't BF3 trigonal planar with 3 bonds and no lone pair? o_O;
  4. Saad (سعد)

    Chemistry: Post your doubts here!

    As-Salaamu 'Alaykum. Someone please explain to me the Electron-Pair Repulsion Theory; I don't get it at all. How do we determine what the bond angles and shapes of molecules are? And whats the shape of/bond angles in an ammonium ion, NH4+? Jazak Allah.
  5. Saad (سعد)

    AS Chem: Isomers

    As-Salaamu 'Alaykum. How do you determine how many isomers there are for any given mol. formula? Is there any trick method or something, or a list of rules to follow to get them all down? I always seem to miss out one or two isomers in the questions when they tell you to draw all possible...
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