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Coordination Compounds question

2025 · 22 Jan · Shift 1 · Q4
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  5. /2025 · 22 Jan · Shift 1 · Q4

Coordination Compounds question

2025 · 22 Jan · Shift 1 · Q4

JEE MainChemistryCoordination CompoundsMCQ+4 / −1
From the magnetic behaviour of [NiCl4]2−\left[\mathrm{NiCl}_4\right]^{2-}[NiCl4​]2−(paramagnetic) and [Ni(CO)4]\left[\mathrm{Ni}(\mathrm{CO})_4\right][Ni(CO)4​] (diamagnetic), choose the correct geometry and oxidation state.
  1. A
    [NiCl4]2−:Ni(0)\left[\mathrm{NiCl}_4\right]^{2-}: \mathrm{Ni}(0)[NiCl4​]2−:Ni(0), tetrahedral [Ni(CO)4]:Ni(0)\left[\mathrm{Ni}(\mathrm{CO})_4\right]: \mathrm{Ni}(0)[Ni(CO)4​]:Ni(0), square planar
  2. B
    [NiCl4]2−:NiII\left[\mathrm{NiCl}_4\right]^{2-}: \mathrm{Ni}^{\mathrm{II}}[NiCl4​]2−:NiII, tetrahedral [Ni(CO)4]:Ni(0)\left[\mathrm{Ni}(\mathrm{CO})_4\right]: \mathrm{Ni}(0)[Ni(CO)4​]:Ni(0), tetrahedral
  3. C
    [NiCl4]2−:NiII\left[\mathrm{NiCl}_4\right]^{2-}: \mathrm{Ni}^{\mathrm{II}}[NiCl4​]2−:NiII, tetrahedral [Ni(CO)4]:NiII\left[\mathrm{Ni}(\mathrm{CO})_4\right]: \mathrm{Ni}^{I I}[Ni(CO)4​]:NiII, square planar
  4. D
    [NiCl4]2−:NiII\left[\mathrm{NiCl}_4\right]^{2-}: \mathrm{Ni}^{\mathrm{II}}[NiCl4​]2−:NiII, square planar [Ni(CO)4]:Ni(0)\left[\mathrm{Ni}(\mathrm{CO})_4\right]: \mathrm{Ni}(0)[Ni(CO)4​]:Ni(0), square planar
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