Vitamin B12 contains - DASH

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Vitamin B₁₂ contains

Fe (II)

Co (III)

Zn (II)

Ca (II)

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Step-by-Step Explanation Step 1: Understanding Vitamin B12 Vitamin B12, also known as cyanocobalamin, is a water-soluble vitamin that plays a vital role in the formation of red blood cells and the proper functioning of the nervous system. One of its distinguishing features is the presence of a central metal ion in its structure. Step 2: Identifying the Metallic Component In the molecular structure of vitamin B12, the metal ion found at the center is cobalt. Specifically, this cobalt ion exists in the +3 oxidation state, thus making it Co(III). This metal center is directly responsible for many of the vitamin’s biological functions. Step 3: Conclusion Due to the presence of a cobalt(III) ion, vitamin B12 is sometimes referred to as “cobalamin.” The prefix “cyano-” in cyanocobalamin refers to the cyanide ligand bound to the cobalt in its structure. This unique composition underpins its role in preventing pernicious anemia and contributing to numerous other physiological functions.

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