49 · In
Indium
Discovered by Reich and Richter in 1863.
Identity
- Atomic number
- 49
- Symbol
- In
- Canonical name
- Indium
- Category
- post-transition metal
- Group
- 13
- Period
- 5
- Block
- p
Properties
These quantities come from the Periodic Table JSON compilation. They have not yet been checked, one by one, against CIAAW atomic weights or NIST measurements. A value marked estimated is not a measurement.
- Atomic mass
- 114.8181 u
- Electron configuration
- [Kr] 4d10 5s2 5p1
- Electrons per shell
- 2, 8, 18, 18, 3
- Standard state
- solid
- Density
- 7.31 g/cm³
- Melting point
- 429.7485 K
- Boiling point
- 2,345 K
- Electronegativity
- 1.78 Pauling
- First ionization energy
- 558.3 kJ/mol
- Electron affinity
- 37.043 kJ/mol
History
Indigo line
Discovery · jointly credited · 1863
Reich and Richter discover indium by spectroscopy in zinc blendes.
Etymology
- Theme
- color
- Language
- latin
- Root
- indicum
- Meaning
- indigo
Scientists
See also
Sources
- IUPAC, Periodic Table of the Elements
- Bowserinator, Periodic Table JSON. Compilation secondaire d’où viennent les grandeurs physiques importées (masse, densité, températures, énergies). Elles ne sont pas revérifiées une à une auprès du NIST ou de la CIAAW.
- John Emsley, Nature’s Building Blocks: An A–Z Guide to the Elements