JEE CHEMISTRY MCQ: CHEMICAL BONDING & MOLECULAR STRUCTURE

1 Hard

1 of 1

Analyzing +4 | -1

Barium ions,

\mathrm{CN}^{-}

and

\mathrm{Co}^{+2}

form an ionic complex. If this complex is

75 \%

ionized in aqueous solution with Vant Hoff factor(i) equal to four and paramagnetic moment is found to be

1.73 \mathrm{BM}

(due to spin only) then hybridization state of

\mathrm{Co}(\mathrm{II})

in the complex will be

View answer and explanation

Correct option: D

\mathrm{dsp}^3

Option D (

\mathrm{dsp}^3

) is correct because the complex formed is

\mathrm{Ba}_3[\mathrm{Co}(\mathrm{CN})_5]_2

with one unpaired electron, leading to

\mathrm{dsp}^3

hybridization.

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