Which one of the following complexes is an outer orbital complex?

  • A
    $[Co(NH_3)_6]^{3+}$
  • B
    $[Mn(CN)_6]^{4-}$
  • C
    $[Fe(CN)_6]^{4-}$
  • D
    $[Ni(NH_3)_6]^{2+}$

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Consider the reaction $K_2[Ni(CN)_4] + 4K + 4NH_3 \to A$ (complex $A$).
Complex $A$ gives five ions in aqueous solution. Choose the $CORRECT$ statements.

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Among the following,the species having square planar geometry for the central atom are:
$(i)$ $XeF_4$
$(ii)$ $SF_4$
$(iii)$ $[NiCl_4]^{2-}$
$(iv)$ $[PtCl_4]^{2-}$

Given below are two statements :
Statement $I$: $[Ni(CN)_4]^{2-}$ is square planar and diamagnetic complex with $dsp^2$ hybridization for $Ni$ but $[Ni(CO)_4]$ is tetrahedral,diamagnetic and with $sp^3$ hybridization for $Ni$.
Statement $II$: $[NiCl_4]^{2-}$ and $[Ni(CO)_4]$ both have same $d$-electron configuration,have same geometry and are paramagnetic.
In light of the above statements,choose the correct answer from the options given below:

$A$ complex involving $dsp^2$ hybridization has:

Which of the following complexes is paramagnetic,an inner orbital complex,and coloured?

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