Multiple choice

Hemoglobin is a complex compound. Which of the following metal cations is present in this compound?

  1. Fe (II)

  2. Mg (II)

  3. Cu (II)

  4. Cr (II)
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A Correct answer
Explanation

Hemoglobin contains iron (Fe) in its heme group, specifically in the +2 oxidation state (Fe(II) or Fe^2+). This iron center is what allows hemoglobin to bind and transport oxygen in the blood.

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