49In
Indium
Post-Transition MetalIndium (In) is element 49, a post-transition metal, in period 5 and group 13 of the periodic table. Its standard atomic weight is 114.818, it melts at 156.6 °C and boils at 2072 °C. Discovered by Ferdinand Reich, 1863.
Atomic Number49
SymbolIn
NameIndium
Atomic Weight114.818 u
CategoryPost-Transition Metal
Period5
Group13
Melting Point156.6 °C
Boiling Point2072 °C
Density7.31 g/cm³
Electron Config[Kr] 4d10 5s2 5p1
Discovered ByFerdinand Reich, 1863