Which of the following is correct for both the following coordination compounds ?
`(I) CoCl_(3).6NH_(3) and " " (II) PtCl_(4).5NH_(3)`

Options

A. They give white precipitate with `AgNO_(3)` solution.
B. They have different primary valencies for the central metal ions.
C. Both (A) and (B)
D. None of these

Answer

C

Explanation

(I) `[Co(NH_(3))_(6)]Cl_(3)+3Ag^(+) to 3AgCl darr+[Co(NH_(3))_(6)]^(3+)`
`Co^(3+) to ` Primary valencies i.e. ionisable valency=3.
(II) `[Pt(NH_(3))_(5)Cl]Cl_(3) +3Ag^(+) to 3AgCldarr+[Pt(NH_(3))_(5)Cl]^(3+)`
`Pt^(4+) to ` Primary valencies =4.