Optional

Indium (In) properties


Atomic mass, symbol and atomic number

indium is a naturally occurring element with the element symbol In and the atomic number 49. In the periodic table it stands with an atomic mass of 114.818 u in the 3rd main group. The chemical element discovered by Ferdinand Reich in 1863 is not radioactive and is in a solid state of aggregation at room temperature.

Profile: Indium (English Indium)

General
Chemical element:indium
Symbol:In
Atomic number:49
Group:boron group
Period:5
Block:p-block
Series:metals
Appearance:silver
explorers:Ferdinand Reich
Year of discovery:1863
Atomic properties
Atomic mass:114,818 and
Atomic radius:155 pm
Covalent radius:144 pm
Van der Waals radius:193 pm
Electron configuration:Kr 4d105s25p1
ionization:558.3 ​​kJ / mol
Physical Properties
Physical state:firmly
Density:7.31 g / cm3
Crystal structure:tetragonal
Magnetism:diamagnetic
molar volume:15,76 · 10-6 m3/ mol
Mohs hardness:1,2
Melting point:156 ° C
Boiling point:2000 ° C
Heat of fusion:3.26 kJ / mol
Heat of vaporization:225 kJ / mol
Thermal conductivity:81.6 W
Chemical properties
electronegativity:1,78

Did you know that ...

  • Indium for a metal a relatively low melting point (156 * C) welißt?
  • China by far the world's most indium promotes?
  • Indium is rarely used industrially due to its rarity