question_answer

According to Werner's theory coordination compounds shows two types of valency called primary and secondary valencies. Secondary valency of \[{{\left[ CO{{({{H}_{2}}O)}_{4}} \right]}^{2\,+}}\] is

A) 4                                

B) 3

C) 2                                

D) 1

Correct Answer: A

Solution :

Secondary valence corresponds to coordination number. Here coordination number of \[{{\left[ CO {{\left( {{H}_{2}}O \right)}_{4}} \right]}^{2+}}\] is 4