Indium

Kemiallinen merkki: In
Järjestysluku: 49
Kategoria: muut metallit
Ryhmä: 13
Jakso: 5
Lohko: p
Moolimassa: 114,818 g/mol
Elektronia kuorilla: 2, 8, 18, 18, 3
CAS-numero: 7440-74-6
Olomuoto: kiinteä
Tiheys: 7,31 kg/l (lähellä huoneenlämpöä)
Sulamispiste: 429,7485 K (156,5985 °C, 313,8773 °F)
Kiehumispiste: 2345 K (2072 °C, 3762 °F)
Kiderakenne: tetragonal
Hapetusluvut: 3
Elektronegatiivisuus: 1,78 (Pauling-asteikko)
Nimen alkuperä: indicum
Nimen tarkoitus: a Latin word meaning indigo blue: spectral stripes of indium are bright blue
Faktoja:
- its primary application is to form transparent electrodes from indium tin oxide in liquid crystal displays
- is also used for making particularly low melting point alloys, and is a component in some lead- free solders
- radioactive indium-111 is used in nuclear medicine as an imaging agent to follow the movement of leukocytes in the body
- pure indium in metal form is considered non-toxic by most sources
- the first large-scale application for indium was as a coating for bearings in high-performance aircraft engines during World War II