IUPAC name of [Cr(NH3)6]Cl3 is:
Hexamminechromium(III) chloride
Triamminechromium(III) chloride
Hexamminechromium(II) chloride
Hexamminochromium(III) chloride
IUPAC name of [Cr(NH3)6]Cl3 is 'Hexamminechromium(III) chloride'. Here Cl- is a negative ligand and NH3 is a neutral ligand.