Counting the coordination number

Exercise and reference answers

Questions

1. Question

   Coordination number of Pt in [PtCl₆]²⁻

   Choices

   1. 4
   2. 2
   3. 6

   Correct choice

   6

2. Question

   Coordination number of Ni in [Ni(NH₃)₄]²⁺

   Choices

   1. 4
   2. 6
   3. 8

   Correct choice

   4

3. Question

   Coordination number of Co in [Co(en)₃]³⁺

   Choices

   1. 3
   2. 6
   3. 9

   Correct choice

   6

4. Question

   Coordination number of Fe in [Fe(C₂O₄)₃]³⁻

   Choices

   1. 3
   2. 12
   3. 6

   Correct choice

   6

Explanation