Barium ions, CN^- and Co^(2+) form an ionic complex. If this complex is 75% ionised in aqueous solution with Vant Ho

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Q 2633823742.     Barium ions, CN^- and Co^(2+) form an ionic complex. If this complex is 75% ionised in aqueous solution with Vant Hoff factor (i) equal to four and paramagnetic moment is found to be 1. 73 BM ( due to spin only) then the hybridisation state of Co (II) in the complex will be
A

sp^3d

B

d^2sp^3

C

sp^3d^2

D

dsp^3

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