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Home Questions 3HNA5Y35EF
Target Exam

CUET

Subject

Chemistry

Chapter

Inorganic: Coordination Compounds

Question:

Match the coordination compounds given in List-I with the central metal atoms given in List-II

List-I Coordination compound

List-II Central metal atom

(A) blood pigment

(I) iron

(B) chlorophyll

(II) magnesium

(C) vitamin $B_{12}$

(III) rhodium

(D) wilkinson catalyst

(IV) cobalt

Choose the correct answer from the options given below:

Options:

(A)-(I), (B)-(II), (C)-(III), (D)-(IV)

(A)-(I), (B)-(III), (C)-(II), (D)-(IV)

(A)-(I), (B)-(II), (C)-(IV), (D)-(III)

(A)-(III), (B)-(IV), (C)-(I), (D)-(II)

Correct Answer:

(A)-(I), (B)-(II), (C)-(IV), (D)-(III)

Explanation:

The correct answer is Option (3) → (A)-(I), (B)-(II), (C)-(IV), (D)-(III)

List-I Coordination compound

List-II Central metal atom

(A) blood pigment

(I) iron

(B) chlorophyll

(II) magnesium

(C) vitamin $B_{12}$

(IV) cobalt

(D) wilkinson catalyst

(III) rhodium

(A) Blood pigment (Hemoglobin/Myoglobin) → (I) Iron:- The heme group in hemoglobin, which is responsible for oxygen transport, has an Iron (Fe) atom at its center, coordinated by a porphyrin ring. 

(B) Chlorophyll → (II) Magnesium:- Chlorophyll, the green pigment essential for photosynthesis in plants, is a chlorin complex with a Magnesium (Mg) atom at its core.

(C) Vitamin $B_{12}$ (Cyanocobalamin) → (IV) Cobalt:- This vitamin is a complex known as a corrin and features a Cobalt (Co) atom in the center.

(D) Wilkinson's catalyst → (III) Rhodium:- This is a coordination complex used primarily for the homogeneous hydrogenation of alkenes. Its chemical formula is $RhCl(PPh_3)_3$ (chlorotris(triphenylphosphine)rhodium(I)), containing a Rhodium (Rh) atom as the central metal.

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