The correct IUPAC name of CrNH33H2O3Cl3 is

[Cr(NH3)3(H2O)3]Cl3A) Cation is named firstB) While naming the complex, ligands (with prorper prefixes) are named first in alphabetical order.C) The name of metal with its oxidation state as roman number in paranthesisD) Prefix is not required to denote counter ion (Cl-)Oxidation state of ‘Cr’ = + 3NH3  .  .  .  ammineH2O .  .  .  aqua∴ IUPAC name is triammine triaqua chromium (III) chloride.