JEE Main 2022 · 24 Jun · Shift 2 · Chemistry Q71

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ChemistrySingle correct+4 / -1Question 71 of 90

Transition metal complex with highest value of crystal field splitting ( $\Delta_0$ ) will be

\mathrm{[Cr(H_2O)_6]^{3+}}

\mathrm{[Mo(H_2O)_6]^{3+}}

\mathrm{[Fe(H_2O)_6]^{3+}}

\mathrm{[Os(H_2O)_6]^{3+}}

Answer and worked solution

Official answer: D

Splitting grows down a group: $\Delta_o$ increases by roughly 30-50% from 3d to 4d to 5d. With the same ligand and charge, the 5d $\mathrm{Os^{3+}}$ complex has the largest $\Delta_o$ .

(D)

Topics:Crystal field theory

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JEE Main 2022 · 24 Jun · Shift 2, Chemistry question 71