question_answer 79)

    Match the coordination compounds 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 catalyst	3. Magnesium
D.	Vitamin	4. Iron

            Codes      A  B   C   D                      A   B   C    D (a) 3 4   1   2                  (b) 3   4   5   1 (c) 4 3   2   1                  (d) 3   4   1   2          

Answer:

                    A.®(3)    B.®(4)    C.®(1)    D.®(2) Central metal ions present on coordination compounds determine the properties of coordination compound and their biological role.

Column I (Coordination compound)	Column II (Central metal atom)
A. Chlorophyll	3. Magnesium
B. Blood pigment	4. Iron
C. Wilkinson catalyst	1. Rhodium
D. Vitamin	2. Cobalt

            Hence, correct choice is (a).