The hybridization observed in the $[PtCl_6]^{2-}$ ion is .......

Identify the geometry of the complex formed when cobalt chloride is dissolved in water.

Triple degenerate $d-$ orbitals are exactly half-filled in

Which complex compound possesses $sp^3d^2$ hybridisation?

For octahedral $Mn(II)$ and tetrahedral $Ni(II)$ complexes,consider the following statements:
$(I)$ Both the complexes can be high spin.
$(II)$ $Ni(II)$ complex can very rarely be low spin.
$(III)$ With strong field ligands,$Mn(II)$ complexes can be low spin.
$(IV)$ Aqueous solution of $Mn(II)$ ions is yellow in color.

Which of the following ions forms complexes with a coordination number of only $4$?