The coloured complexes among
(a) `Cu(NH_(3))_(4) Cl_(2)`
(b) `K_(2) HgI_(4) `
(c) `Ag(NH_(3))_(2) Cl`
is/are

[Co(NH_(3))_(4)Cl_(2)]^(+) exhibits

The IUPAC name of the complex [Co(NH_(3))_(4)Cl_(2)]Cl is

Write the IUPAC names of the following coordination compounds: (a) [Pt(NH_(3))_(2)Cl(NO_(2))] (b) K_(3)[Cr(C_(2)O_(4))_(3)] (c) [CoCl_(2)(en)_(2)]Cl (d) [Co(NH_(3))]Cl (e) Hg[Co(SCN)_(4)]