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Question:

(a) For the complex [Fe(H₂O)₆]³⁺, write the hybridisation, magnetic character and spin of the complex. (At. number: Fe = 26) (b) Draw one of the geometrical isomers of the complex [Pt(en)₂Cl₂]²⁺ which is optically inactive.

Solution:

(a) Hybridisation-sp³d², magnetic character- paramagnetic and have octahedral geometry (b) The geometrical isomer is shown in the diagram. Trans isomer of [Pt(en)₂Cl₂]²⁺ shows no optical activity.