Coordination CompoundHardBloom L2

Question

Which of the following ions are optically active?
            

Options

A.I only
B.II only
C.II and III
D.IV only

Solution

(A) I is trans form which has centre of symmetry as well as plane of symmetry ; so optically inactive
(B) II is cis form which lacks centre of symmetry as well as plane of symmetry ; so optically active
(C) (II) and (III) lack symmetry elements ; so both are optically active.
(D) IV is trans form which has centre of symmetry as well as plane of symmetry ; so optically inactive

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