The Periodic Table of Elements
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49
In
Indium
Summary
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.
Block: p
Period: 5
Group: 13
Atomic Mass: 114.818 g/mol (amu)
Discovered By: Ferdinand Reich
Phase: Solid
Boiling Point: 2345 K
Melting Point: 429.7485 K
Type: post-transition metal
Density: 7.31 g/cm3
Electron Configuration: 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p1
Electron Configuration (Semantic): [Kr] 4d10 5s2 5p1