MCQEasyJEE Main 2025 · 22 January, Shift 1Crystal Field Theory

Chemistry Question from JEE Main 2025 · 22 January, Shift 1

From the magnetic behaviour of [NiCl4]2[NiCl_4]^{2-} (paramagnetic) and [Ni(CO)4][Ni(CO)_4] (diamagnetic), choose the correct geometry and oxidation state.

  • A

    [NiCl4]2[NiCl_4]^{2-} : Ni2+Ni^{2+}, square planar [Ni(CO)4][Ni(CO)_4] : Ni(0)Ni(0), square planar

  • B

    [NiCl4]2[NiCl_4]^{2-} : Ni2+Ni^{2+}, tetrahedral [Ni(CO)4][Ni(CO)_4] : Ni(0)Ni(0), tetrahedral

  • C

    [NiCl4]2[NiCl_4]^{2-} : Ni2+Ni^{2+}, tetrahedral [Ni(CO)4][Ni(CO)_4] : Ni2+Ni^{2+}, square planar

  • D

    [NiCl4]2[NiCl_4]^{2-} : Ni(0)Ni(0), tetrahedral [Ni(CO)4][Ni(CO)_4] : Ni(0)Ni(0), square planar

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