Both `Co^(3+) and Pt^(4+)` have a coordination number of six. Which of the following pair of complexes will show approximately the same electrical conductance for their `0.001` M aqueous solution ?

Options

A. `CoCl_(3).4NH_(3)" and " PtCl_(4).4NH_(3)`
B. `CoCl_(3).3NH_(3)" and " PtCl_(4).5NH_(3)`
C. `CoCl_(3).6NH_(3)" and " PtCl_(4).5NH_(3)`
D. `CoCl_(3).6NH_(3)" and " PtCl_(4).3NH_(3)`

Answer

C

Explanation

`CoCl_(3)*6NH_(3)rarr [Co(NH_(3))_(6)]Cl_(3)`
`PtCl_(4)*5NH_(3)rarr[Pt(NH_(3))_(5)Cl]Cl_(3)`
Both have 4 ions in their aq. Solution