Question

Which oxidation state of fe in the heme of hemoglobin is capable of binding oxygen?

Answer 1

Answer:

+2

Explanation:

Answer 2

$\huge{He¥ MaTe!!!}$

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✔✔ When the iron atom in the heme group becomes oxidized (loses an electron), its valence state changes from +2 (ferrous) to +3 (ferric).

✔✔ The hemoglobin is then called methemoglobin (metHb) or ferrihemoglobin (Fe+3 will not bind oxygen). Ordinarily, about 1% of the hemoglobin in a red blood cell is in this form.

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