$K_3[CoF_6]$ is a high-spin complex. The hybridization state of $Co$ in this complex is .....................

Consider the transition metal ions $Mn^{3+}$,$Cr^{3+}$,$Fe^{3+}$,and $Co^{3+}$. All form low spin octahedral complexes. The correct decreasing order of unpaired electrons in their respective $d$-orbitals of the complexes is:

What is the color of the complex $[Co(H_2O)_6]Cl_3$?

Discuss the $[NiCl_4]^{2-}$ complex species based on Valence Bond Theory.

Which of the following statements is not true for the reaction given below?
$[Cu(H_2O)_4]^{2+} + 4NH_3 \rightleftharpoons [Cu(NH_3)_4]^{2+} + 4H_2O$

Which of the following has a square planar geometry? $(Co = 27, Ni = 28, Fe = 26, Pt = 78)$