Write the IUPAC name of the complex [Cr(NH3)4Cl2]+. What type of isomerism does it exhibit?

The IUPAC name of the given complex is Tetraamminedichlorochromium(III) ion. It shows geometrical isomerism (cis-trans isomerism). The cis isomer has two chloride ligands adjacent to each other, and the trans isomer has two chloride ligands opposite to each other.