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Match the metals (column I) with the coordination compound(s)/enzyme(s) (column II): (Column I) Metals (A) Co (B) Zn (C) Rh (D) Mg (Column II) Coordination compound(s)/enzyme(s) (i) Wilkinson catalyst (ii) Chlorophyll (iii) Vitamin B12 (iv) Carbonic anhydrase

1. (A)-(a); (B)-(iv); (C)-(i); (D)-(ii)
2. (A)-(i); (B)-(iii); (C)-(iv); (D)-(ii)
3. (A)-(i); (B)-(ii); (C)-(iii); (D)-(iv)
4. (A)-(ii); (B)-(i); (C)-(iv); (D)-(iii)

Correct answer: (A)-(a); (B)-(iv); (C)-(i); (D)-(ii)

Solution

The correct option matches each metal with its known coordination compound or enzyme: Cobalt (Co) is found in Vitamin B12, Zinc (Zn) is a key component of Carbonic anhydrase, Rhodium (Rh) is used in the Wilkinson catalyst, and Magnesium (Mg) is central to the structure of Chlorophyll.

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