49In
Indium
Post-transition metal
Properties of Indium
- Atomic number (Z)
- 49
- Symbol
- In
- Name
- Indium
- Atomic mass
- 114.818 u
- Period
- 5
- Group
- 13
- Family
- Boron group
- Classification
- Post-transition metal
- Electron configuration
- [Kr] 4d¹⁰ 5s² 5p¹
About Indium
Indium is a chemical element with symbol In and atomic number 49 (atomic mass of about 114.818 u). It is classified as a post-transition metal on the periodic table.
On the periodic table, Indium is located in period 5, in group 13, belonging to the boron group family. An element's position reveals trends in its properties, such as atomic radius, electronegativity and metallic character.
The electron configuration of Indium is [Kr] 4d¹⁰ 5s² 5p¹, which determines how it forms chemical bonds and takes part in reactions.