The coordination complex [Co(OH_2)_6]^{2+} ha | vedclass

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(C) The central metal ion is $Co^{2+}$,which has a $d^7$ electronic configuration.$(i)$ Since there are $6$ ligands $(H_2O)$,the coordination number i

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$(i)$ and $(ii)$ only

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(C) The central metal ion is $Co^{2+}$,which has a $d^7$ electronic configuration.$(i)$ Since there are $6$ ligands $(H_2O)$,the coordination number is $6$,making the geometry octahedral.$(ii)$ $H_2O$ is a weak field ligand,so it forms a high-spin (outer orbital) complex using $sp^3d^2$ hybridization.$(iii)$ The complex has one unpaired electron (as stated in the question),so it is paramagnetic,not diamagnetic.Therefore,statements $(i)$ and $(ii)$ are true.

The coordination complex $[Co(OH_2)_6]^{2+}$ has one unpaired electron. Which of the following statements are true?
$(i)$ The complex is octahedral.
$(ii)$ The complex is an outer orbital complex.
$(iii)$ The complex is diamagnetic.

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The coordination complex $[Co(OH_2)_6]^{2+}$ has one unpaired electron. Which of the following statements are true?$(i)$ The complex is octahedral.$(ii)$ The complex is an outer orbital complex.$(iii)$ The complex is diamagnetic.