53I
Iodine
Halogen
Properties of Iodine
- Atomic number (Z)
- 53
- Symbol
- I
- Name
- Iodine
- Atomic mass
- 126.904 u
- Period
- 5
- Group
- 17
- Family
- Halogens
- Classification
- Halogen
- Electron configuration
- [Kr] 4d¹⁰ 5s² 5p⁵
About Iodine
Iodine is a chemical element with symbol I and atomic number 53 (atomic mass of about 126.904 u). It is classified as a halogen on the periodic table.
On the periodic table, Iodine is located in period 5, in group 17, belonging to the halogens family. An element's position reveals trends in its properties, such as atomic radius, electronegativity and metallic character.
The electron configuration of Iodine is [Kr] 4d¹⁰ 5s² 5p⁵, which determines how it forms chemical bonds and takes part in reactions.