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Chromate ion

  1. Sep 25, 2016 #1
    Can some one explain the structure of chromate ion on the basis of hybridisation cause I'm a bit confused I googled about it and there are posts like explaining it as sp3 hybridised ion. Explain please.
     
  2. jcsd
  3. Sep 25, 2016 #2
    Guys please help me.
     
  4. Sep 26, 2016 #3

    DrDu

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    If you really want to describe transition metal compounds in terms of hybrids, I would rather go for ##d^3s## than ##sp^3##, as the p orbitals in a highly charged ion like chromium VI are energetically much higher than the d orbitals. The d3s hybrids are directed along the diagonals of a cube. If you allow for a small substitution of d for p, the two directions along the diagonal become unequal and you will get a more tetrahedral shape.
     
  5. Sep 26, 2016 #4
    The inner s orbital ie 3s would be affected by hybridisation or not? And how we are considering hybridisation between 2 orbitals of different shells?
     
  6. Sep 26, 2016 #5

    DrDu

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    The inner 3s orbital is way too low in energy and completely filled. Hence it won't participate in bonding. There is no prinicpal difficulty with hybridizing orbitals of different sub-shells as long as they are of comparable energy and size.
     
  7. Sep 26, 2016 #6
    Got it. One more thing chromate ion is a complex right?
     
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