When excess ammonia gas is passed throug...

When excess ammonia gas is passed through aq `CrCl_3` solution, complexes A and B are formed. Complex A gives 2 particles and complex B gives 4 charges. Write the formula of complexes.

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Complex A gives two ions, in which one is complex ion and other is chloride. Formula of the complex, A is `[Cr(NH_3)_4Cl_2]Cl`. Complex B gives cation with two charges and anions with total of two charges. Formula of the complex B is `[Cr(NH_3)_5Cl]Cl_2`

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