Question
a.
B₁₂(Co²⁺)to B₁₂(Co)
b.
B₁₂(Co) to B₁₂(Co²⁺)
c.
B₁₂(Co²⁺)to B₁₂(Co⁺)
d.
B₁₂(Co⁺)to B₁₂(Co²⁺)
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