- Atomic Radius (Å)
Indium is a chemical element with symbol In and atomic number 49. It is a post-transition metallic element that is rare in Earth's crust. The metal is very soft, malleable and easily fusible, with a melting point higher than sodium, but lower than lithium or tin.
49 Atomic Number
114.82 u Atomic Mass
429.91 K Melting Point
2345 K Boiling Point
7.31 g/cm³ Density
2 Å Atomic Radius
1.42 Å Covalent Radius
1.78 Electronegativity
5.79 eV First Ionization Energy
37.04 Electron Affinity
5 Number of Shells
3 Electron Valency
2, 8, 18, 18, 3 Electron Shell Occupations
0.23 J/g Specific Heat