Structure of [Cr(NH3)6]Cl2
The complex ion [Cr(NH3)6]2+ consists of a central chromium atom surrounded by six ammonia ligands. Each ligand donates a lone pair of electrons to the central chromium atom, forming coordinate covalent bonds. The overall charge of the complex ion is +2.

Coordination Structure
- The central chromium atom has a coordination number of 6, meaning it is surrounded by six ligands.
- The ammonia ligands are arranged in an octahedral geometry around the central chromium atom.

Chromium Atom
- The chromium atom in the complex ion has a charge of +2, as each ammonia ligand donates a lone pair of electrons to the chromium atom.

Chloride Ions
- The complex ion [Cr(NH3)6]2+ is associated with two chloride ions, which balance the overall charge of the compound.
- The chloride ions are located outside the coordination sphere of the complex ion.

Overall Structure
- The structure of [Cr(NH3)6]Cl2 can be visualized as a central chromium atom surrounded by six ammonia ligands in an octahedral arrangement, with two chloride ions associated with the complex ion.