QJEEM23Ch0b10: JEE Main 2023 Chemistry - Class 12 JEEM23Ch0b10 Solution: The hybridization and magnetic behaviour of cobalt ion in [ Co…

Question

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The hybridization and magnetic behaviour of cobalt ion in $[Co ({NH}_{3})_{6}]^{3 +}$ complex, respectively is :

Accepted Answer

\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{6}\right]^{3+}

is diamagnetic with

\mathrm{d}^{2} \mathrm{sp}^{3}

hybridisation of

\mathrm{Co}^{+3}

.

This is because

\mathrm{NH}_{3}

is a strong field ligand and forces electrons to pair up in a

\mathrm{d}^{6}

configuration.

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