Thyroxine, the hormone has given below structure (with 4 iodine atoms, molecular formula ).
The percentage of iodine in thyroxine is %. (nearest integer)

(Given molar mass in g mol: C: 12, H: 1, O:

Question

Thyroxine, the hormone has given below structure (with 4 iodine atoms, molecular formula ).
 The percentage of iodine in thyroxine is  %. (nearest integer)

(Given molar mass in g mol: C: 12, H: 1, O: 16, N: 14, I: 127)

Canvas Classes · Accepted Answer

Strategy:
 Sum the atomic masses of all elements in the thyroxine molecule () to find the molar mass. Then, calculate the mass percentage of Iodine ( atoms).

Step 1: Calculate Molar Mass

.

Step 2: Calculate percentage of Iodine

Nearest integer is 65.

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