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Give the formula of each of the following coordination entities : Ni^(2+) ion is bound to two water molecules and two oxalate ions. Write the name and magnetic behaviour of each of the above coordination entities. |
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Answer» Solution :`Ni^(2+) + 2H_(2)O + 2C_(2)O_(4)^(2-)` `[Ni(H_(2)O)_(2)(Ox)_(2)]^(2-)` Name : Diaquadioxalatonickelate(II) ion Here the LIGANDS are weak and pairing of electrons will not take PLACE. EVEN if pairing of electrons takes place, we cannot get two vacant d-orbitals. Here `sp^(3)d^(2)` hybridisation takes place. Configuration of `Ni^(2+)` ion  Six electron pairs from the ligands are accommodated in `sp^(3)d^(2)` hybrid orbitals giving octahedral shape. As there are two unpaired electrons, the complex ion is paramagnetic. |
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