Match each 3d-series metal ion in Column I with its correct characteristic in Column II. Column I: (P) Ni2+ (Q) Cr2+ (R) V2+ (S) Ti4+ Column II: (1) gives a blue aqueous solution (2) has half-filled t2g orbitals in an octahedral complex (3) is a diamagnetic ion (4) has spin-only magnetic m

Question

Match each 3d-series metal ion in Column I with its correct characteristic in Column II. Column I: (P) Ni2+ (Q) Cr2+ (R) V2+ (S) Ti4+ Column II: (1) gives a blue aqueous solution (2) has half-filled t2g orbitals in an octahedral complex (3) is a diamagnetic ion (4) has spin-only magnetic moment mu = 2.84 B.M. Choose the correct matching code for P, Q, R, S.

Accepted Answer

P-4, Q-1, R-2, S-3. Ni2+ (d8, 2 unpaired) gives mu = 2.84 B.M.; Cr2+ in low-spin/Cu2+-like blue solutions is associated with the blue colour; V2+ (d3) has half-filled t2g; Ti4+ (d0) is diamagnetic.

Solution

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