Magnus's green salt has the formula

Options

A. `[Pt(NH_(3))_(4)]^(2+) [PtCI_(4)]^(2-)`
B. `[Pd(NH_(3))_(4)]^(2+) [Pd(SCN)_(4)]^(2-)`
C. `[Cu(NH_(3))_(4)]^(2)+ [PtCI_(4)]^(2-)`
D. `[PtCI_(2)(en)]`

Answer

A

Explanation

Unfortunately, there are a number of transition metal compounds that have well known common names in addition to therir systematic names. For example, a few complexes are identified by the name of their discoverer such as Zeise's compound, Wilkinson's catalyst and Magnus' green salt. Magnus' green salt has the formula `[Pt(NH_(3))_(4)]^(2+)` `[PtCI_(4)]^(2-)` and the square planer anions and cations are stacked on top of each other. This structure also occcurs in other complexes such as `[Pd(NH_(3))_(4)]^(2+)` `[Pd(SCN)_(4)]^(2-)` and `[Cu(NH_(3))_(4)]^(2+)` `[PtCI_(4)]^(2-)` .