115. Задачка по химии №011 591

Choose among the proposed complex compounds cationic complexes. Name the selected complex compounds, determine the charge of the complexing agent, write the equation for the primary dissociation of salts in solution, determine the coordination number of the complex ion, indicate the ligands.
5. K2[HgI4]; [Fe(H2O)6]Cl3; [Pt(NH3)2 Br4]

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