The metal ion present in vitamin $\mathrm{B}_{12}$ is

The metal ion present in vitamin $\mathrm{B}_{12}$ is
  1. $\mathrm{Co}^{3+}$
  2. $\mathrm{Co}^{2+}$
  3. $\mathrm{Fe}^{2+}$
  4. $\mathrm{Fe}^{3+}$

Solution

$\mathrm{Co}^{3+}$

Asked in: AP EAMCET 2001

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