The shape of $[Cu(NH_3)_4]^{2+}$ is square planar. The $Cu^{2+}$ ion in this complex is:

Which of the following matches is incorrect?
Complex compounds $-$ Type of hybridization

$[Cr(H_2O)_6]Cl_3$ $(At. \text{ } no. \text{ } of \text{ } Cr = 24)$ has a magnetic moment of $3.83 \text{ } B.M.$ The correct distribution of $3d$ electrons in the chromium of the complex is

Consider that a $d^{6}$ metal ion $(M^{2+})$ forms a complex with aqua ligands,and the spin-only magnetic moment of the complex is $4.90 \ BM.$ The geometry and the crystal field stabilization energy $(CFSE)$ of the complex are:

The tetracyanonickelate $(II)$ complex ion has a ..... geometry.

The Jahn-Teller effect is not observed in high spin complexes of: