Match the coordination given in Column I with the central metal atoms given in Column II and assign the correct code.

Column I 

(Coordination compound)

Column II

(Central metal atom) 

A. Chlorophyll 1. Rhodium
B. Blood pigment 2. Cobalt
C. Wilkinson's catalyst  3. Magnesium
D. Vitamin B12  4. Iron 

Codes

          A         B          C           D

1.       2          3           4           1

2.       3          4           1           2

3.       1          4           3           2

4.       4          1           3           2


 


 




Hint: Blood pigment contains iron.

Central metal ions present on coordination compounds determine the properties of coordination compounds and their biological role.

Column l 

(Coordination compound)

Column 

(Central metal atom) 

A. Chlorophyll 1. Magnesium
B. Blood pigment 2. Iron 
C. Wilkinson catalyst  3. Rhodium
D. Vitamin B  4. Cobalt

Hence, the correct answer is the second option.