Question

Tetracyanocuprate(II) ion involves ______ hybridisation and is ______ in shape.

Answer 1

Tetracyanocuprate(II) ion involves dsp² hybridisation and is square planar in shape.

Explanation:

In the [Cu(CN)₄]²⁻complex, copper is in the +2 oxidation state and uses its 3d, 4s, and 4p orbitals for hybridisation. Since cyanide (CN⁻) is a strong field ligand, it causes the pairing of electrons, resulting in the square planar geometry.