`EAN` of cobalt is 36 in `[Co(NH_(3))_(2)O_(2)(en)br]` Thus `O_(2)` is .

EAN of cobalt is 36 in [Co(NH_(3))_(2) O_(2)(en)Cl] thus , O_(2) is

EAN of cobalt is 36 in [Co(NH_3)_2 O_2 (en)Cl] . Knowing that atomic number of Co is 27,O_2 is present as

Oxidation state of cobalt in [Co(NH_(3))_(4)(H_(2)O)Cl]SO_(4) is

The EAN of cobalt in the complex ion [Co(en)_(2)Cl_(2)]^(+) is

Oxidation number of cobalt in [Co(NH_(3))_(6)]Cl_(2)Br is -

Oxidation number of cobalt in [Co(NH_(3))_(6)]Cl_(2)Br is -

Name the following complexes according to the IUPAC system of nomenclature (i) [Co(NH_(3))_(4)(H_(2)O)Br](NO_(3))_(2) (ii) Na[Au(CN)_(2)] (iii) Na_(3)[Fe(C_(2)O_(4))_(3)] (iv) [Co(en)_(3)[Cl_(3)