Why is iodine placed just after tellurium on the periodic table even though its atomic mass is less than the atomic mass of tellurium?

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Bucky

Chemistry

5 January, 19:35

Why is iodine placed just after tellurium on the periodic table even though its atomic mass is less than the atomic mass of tellurium?

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Monserrat · Answer 1

Iodine follows Tellurium in the periodic table of the elements due to its higher atomic number. The atomic number (the number of protons in the nucleus) of Iodine is 53, while that of Tellurium is 52. The elements are not arranged by atomic mass.