KCET 2018 Chemistry Solved Paper

The oxidation number of Co in given complex is
x+4×0+1(−1)+1(−1)=+1
x=+3
The IUPAC name of the given complex [Co(NH3)4Cl(NO2)]Cl is tetraamminechloridonitrito-N-cobalt(III) chloride.
NO2− is an ambidentate ligand name is nitrito-N means linkage is from N atom