The chemical name of Vitamin is Cyanocobalamin, notable for containing a specific transition metal coordinated within a macrocyclic corrin ring. What is the exact atomic number of this central transit

Question

The chemical name of Vitamin $B_{12}$ is Cyanocobalamin, notable for containing a specific transition metal coordinated within a macrocyclic corrin ring. What is the exact atomic number of this central transition metal?

Prashant Kotian · Accepted Answer

Correct answer: 27. Vitamin (Cyanocobalamin) is structurally unique as it possesses a central Cobalt () atom coordinated by the nitrogen atoms of a corrin ring. The atomic number of Cobalt is 27.

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