53
I
Iodine
126.9 u
Iodine
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Period
5
Group
17
Block
p-block
Phase (STP)
Solid
Iodine is a halogen essential for thyroid function. It sublimes to form a purple vapor and is used as a disinfectant.
Compounds Containing Iodine
More Halogen
Frequently Asked Questions
What is Iodine?
Iodine (I) is a chemical element with atomic number 53. It is a solid at standard temperature and pressure, classified as a halogen.
What are the key properties of Iodine?
Iodine has an atomic mass of 126.9 u.
What is the electron configuration of Iodine?
The electron configuration of Iodine is [Kr] 4d10 5s2 5p5. It is in the p-block of the periodic table.
What is the electronegativity of Iodine?
Iodine has an electronegativity of 2.66 on the Pauling scale.