A solution of Cr(NO3)3 slowly turns gree...

A solution of `Cr(NO_3)_3` slowly turns green when concentrated HCl is added to it . It is due to the formation of:

A

`CrCl_3`

B

`Cr_2O_3`

C

`CrO`

D

Chloro complex `[Cr(H_2O)_6]Cl_3`

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The correct Answer is:

D

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