The geometry and magnetic behaviour of the complex $[Ni(CO)_4]$ are

  • A
    square planar geometry and diamagnetic
  • B
    tetrahedral geometry and diamagnetic
  • C
    square planar geometry and paramagnetic
  • D
    tetrahedral geometry and paramagnetic

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The hybridisation of metals involved in the following complexes,$[Mn(CN)_6]^{3-}$ and $[CoF_6]^{3-}$,are respectively:

How many hybrid orbitals of cobalt ion are involved in the formation of the hexaamminecobalt$(III)$ chloride complex?

Which of the following statements are correct?
$i$. $[Mn(CN)_6]^{3-}, [MnCl_6]^{3-}$ both are paramagnetic
$ii$. Both $[NiCl_4]^{2-}, [Ni(CO)_4]$ are tetrahedral and diamagnetic
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$A$ coordination compound is made of $Co^{3+}$,$NH_3$,and $Cl^{-}$. $A$ $0.1 \ M$ solution of this complex when treated with excess silver nitrate gave no precipitate. The formula of the complex and secondary valency of metal are respectively.

Identify,from the following,the diamagnetic,tetrahedral complex.

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