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    Hi, I've just started my AS chemistry course and I've become stuck on two questions...

    Please may someone tell me the correct dot cross diagram for the ionic compound Sodium nitride, Na3N ?

    And the dot cross diagram for an ammonium ion NH4+ ?

    Many thanks

    Becca
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    (Original post by BecTin)
    Hi, I've just started my AS chemistry course and I've become stuck on two questions...

    Please may someone tell me the correct dot cross diagram for the ionic compound Sodium nitride, Na3N ?

    And the dot cross diagram for an ammonium ion NH4+ ?

    Many thanks

    Becca
    ammonia has a lone pair that dative covalents to H+(no electron, only a proton), hence becoming tetrahedral.

    nitride on the other hand consists of Na+ and N3-. So it is one nitrogen with 3 extra electrons around it(it is essentially an ion with noble gas configuration)
 
 
 
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