The chloride of which of the following elemen | vedclass

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(D) The correct answer is $(D)$.$CoCl_3$ contains the $Co^{3+}$ ion.The electronic configuration of $Co^{3+}$ is $[Ar] 3d^6$.It has $4$ unpaired elect

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$Co$

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(D) The correct answer is $(D)$.$CoCl_3$ contains the $Co^{3+}$ ion.The electronic configuration of $Co^{3+}$ is $[Ar] 3d^6$.It has $4$ unpaired electrons in the $3d$ subshell.Due to the presence of unpaired electrons,$CoCl_3$ exhibits color,whereas $AgCl$,$HgCl_2$,and $ZnCl_2$ are white because they have a $d^{10}$ configuration with no unpaired electrons.

The chloride of which of the following elements is coloured?

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