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Given below is the structure of hormone “Thyroxine”. What is the % of I (iodine) in the molecule.

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ago in Chemistry by (37.3k points)

Given below is the structure of hormone “Thyroxine”. What is the % of I (iodine) in the molecule.

thyroxine

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ago by (37.4k points)

Answer is: 65

\(\text{Molecular weight of thyroxine } = 776.87 \ g/mol\)

\(\text{Mass of iodine in thyroxine }= 4 \times 126.9\)

\(= 507.6\ g\)

\(\% I = \frac{507.6}{776.87} \times 100 = 65\%\)

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