The hybridization of the central metal ion in $[CoF_6]^{3-}$ is ....

Consider the following complex: $[Co(NH_3)_5CO_3]ClO_4$. The coordination number,oxidation number,number of $d-$ electrons,and number of unpaired $d-$ electrons on the metal are respectively:

$A$ 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.

The magnetic moment of $[MnX_4]^{2-}$ is $5.9 \, BM$. The geometry of the complex ion is: ($X =$ monodentate halide ion)

The correct order of $[FeF_6]^{3-}, [CoF_6]^{3-}, [Ni(CO)_4]$ and $[Ni(CN)_4]^{2-}$ complex species based on the number of unpaired electrons present is $:$

$[Co(NH_3)_6]^{3+}$ and $[CoF_6]^{3-}$ are respectively known as: