Question:
Oxymyoglobin and oxyhemoglobin, respectively, are:
Oxymyoglobin and oxyhemoglobin, respectively, are:
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Oxygen binding switches iron from high spin to low spin, pairing all d electrons.
Updated On: Jul 3, 2026
- Paramagnetic and diamagnetic
- Diamagnetic and diamagnetic
- Paramagnetic and paramagnetic
- Diamagnetic and paramagnetic
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The Correct Option is B
Solution and Explanation
Step 1: Deoxy Fe2+ is high spin, paramagnetic, 4 unpaired electrons.
Step 2: O2 binding is a strong field ligand, switches iron to low spin.
Step 3: Low spin Fe2+ has all 6 d electrons paired, no unpaired electrons.
Step 4: Both myoglobin and hemoglobin hemes behave the same way, so both oxy forms are diamagnetic.
\[\boxed{\text{Diamagnetic and diamagnetic}}\]Was this answer helpful?
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