Thyroxine, the hormone has given below structure
The percentage of iodine in thyroxine is _____%. (nearest integer)
(Given molar mass in gmol^-1 C : 12, H : 1, O : 16, N : 14, I : 127)

Question

Thyroxine, the hormone has given below structure The percentage of iodine in thyroxine is _____%. (nearest integer) (Given molar mass in gmol -1 C : 12, H : 1, O : 16, N : 14, I : 127)

TestHub · Accepted Answer

Thyroxine contains 4 iodine atoms. Molar mass = 12 × 15 + 1 × 11 + 16 × 4 + 14 × 1 + 127 × 4 = 777 g/mol. Mass of iodine = 127 × 4 = 508 . % iodine = 777 508 ​ × 100 ≈ 65% .

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JEE Advanced (2028)