Write the state of hybridization, the shape and the magnetic behaviour of the following complex entities:

(i) [Cr (NH₃)₄ Cl₂] Cl

(ii) [Co (en) ₃] Cl₃

(iii) K₂ [Ni (CN) ₄]

(i) [Cr (NH₃)₄ Cl₂]Cl

Name - Tetraamminedichloridochromium (III) chloride

Stereochemistry - Shows geometric isomerism and the cis form is optically active

Magnetic behaviour - Paramagnetic

(ii) [Co (en₃)]Cl₃                                   

Name -tris (ethane-1, 2-diamine) cobalt (III) chloride

Stereochemistry -Shows optical isomerism

Magnetic behaviour - Paramagnetic

(iii) K₂ [Ni (CN) ₄]

Name -Potassium tetracyano nickelate (II)

Stereochemistry - Does not show geometric or optical isomerism