MCQ
The metal present in ${B_{12}}$ is
- AMagnesium
- BIron
- ✓Cobalt
- DManganese
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(image) $\xrightarrow{{[O]}}A\xrightarrow{{SOC{l_2}}}B\xrightarrow{{Na{N_3}}}C\xrightarrow{{Heat}}D$
The products formed in the above reaction are