Using IUPAC norms write the systematic names of the following: (i) [Ni(NH3)6]Cl2 (ii) [Co(en)3]3+ (iii) [Ni(CO)4]

( i ) Hexaamminenickel(II) chloride

( ii ) Tris(ethane-1, 2-diammine) cobalt(III) ion

( iii ) Tetracarbonylnickel(0)