Indium (In)
Indium is a soft metal primarily used in touchscreens and flat-panel displays as indium tin oxide.
Properties of Indium
- Atomic number
- 49
- Category
- Post-Transition Metal
- Atomic mass
- 114.82 u
- Electron configuration
- [Kr] 4d¹⁰ 5s² 5p¹
- Melting point
- 429.75 K (156.6 °C)
- Boiling point
- 2345 K (2071.85 °C)
- Density
- 7.31 g/cm³
- Electronegativity (Pauling)
- 1.78
- Appearance
- Silvery lustrous gray metal
- Discovered by
- Ferdinand Reich (1863)
Facts about Indium
- Indium is in every smartphone touchscreen!
- Indium is so soft you can bite into it like chocolate!
- When you bend indium, it makes a high-pitched "tin cry" sound!
- Indium is named after the indigo-blue line in its spectrum!