Mention the coordination entity, ligand, counter ion, oxidation number of the central metal ion of the coordination compound `[Cu(NH_(3))_(4)]SO_(4)`.

Explanation

Coordination entity: `[Cu(NH_(3))_(4)]^(2+)`
Ligand : `NH_(3)` molecule
Counter ion: `SO_(4)^(2-)` ion
Let, oxidation number of central metal, `Cu=x`
`therefore x+4xx0=+2" or, "x=+2`