Question

Which of the following primary and secondary valencies are not correctly marked against the compound?

• A. $[Cr(NH_{3})_{6}]Cl_{3}, p = 3, s = 6$
• B. $K_{2}[PtCl_{4}], p = 2, s = 4$
• C. $[Pt(NH_{3})_{2} Cl_{2}], p = 2, s = 4$
• D. $[Cu(NH_{3})_{4}]SO_{4}, p = 4,s = 4$

Answer 1

Answer: (D)

$[Cu(NH_{3})_{4}]SO_{4}, p = 4,s = 4$

Answer 2

In $[Cu (NH_{3})_{4}]SO_{4}$ primary valency is $2$ and secondary valency is $4$.