JEE Main 2014 · 9 Apr · Shift 1 · Chemistry Q44

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ChemistrySingle correct+4 / -1Question 44 of 90

An octahedral complex of $\ce{Co^3+}$ is diamagnetic. The hybridisation involved in the formation of the complex is :

sp^3d^2

dsp^2

d^2sp^3

dsp^3d

Answer and worked solution

Official answer: C

$\ce{Co^3+}$ is $d^6$ . Diamagnetic means low spin, with all six electrons in $t_{2g}$ . The two empty $e_g$ orbitals give inner-orbital $d^2sp^3$ hybridisation.

Topics:Valence bond theory

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JEE Main 2014 · 9 Apr · Shift 1, Chemistry question 44