Question

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

• A. $\lbrack Cr(NH_{3})_{6}\rbrack Cl_{3},p = 3,s = 6$
• B. $K_{2}\lbrack PtCl_{4}\rbrack,p = 2,s = 4$
• C. $\lbrack pt(NH_{3})_{2}Cl_{2}\rbrack,P = 2,s = 4$
• D. $\lbrack Cu(NH_{3})_{4}\rbrack SO_{4},p = 4,s = 4$

Answer 1

Answer: (D)

$\lbrack Cu(NH_{3})_{4}\rbrack SO_{4},p = 4,s = 4$

Answer 2

In $\lbrack Cu(NH_{3})_{4}\rbrack SO_{4}$primary valency is 2 and secondary valency is 4.