Tina

Kemiallinen merkki: Sn
Järjestysluku: 50
Kategoria: muut metallit
Ryhmä: 14
Jakso: 5
Lohko: p
Moolimassa: 118,710 g/mol
Elektronia kuorilla: 2, 8, 18, 18, 4
CAS-numero: 7440-31-5
Olomuoto: kiinteä
Tiheys: 7,365 kg/l (valkoinen) (lähellä huoneenlämpöä) 5,769 kg/l (harmaa) (lähellä huoneenlämpöä)
Sulamispiste: 505,08 K (231,93 °C, 449,47 °F)
Kiehumispiste: 2875 K (2602 °C, 4716 °F)
Kiderakenne: tetragonal
Hapetusluvut: 4, 2
Elektronegatiivisuus: 1,96 (Pauling-asteikko)
Nimen alkuperä: stannum
Nimen tarkoitus: the lead-silver alloy of the same name for the finding of the latter in ores
Faktoja:
- is the 49th most abundant element and has, with 10 isotopes, the largest number of stable isotopes in the periodic table
- a silvery, malleable poor metal which is not easily oxidized in air, and is used to coat other metals to prevent corrosion
- due to its low toxicity, tin-plated metal is also used for food packaging, giving the name to tin cans, which are made mostly out of aluminium or tin-plated steel
- plays no known natural biological role in humans, and possible health effects of tin are a subject of dispute - tin itself is not toxic but most tin salts are
- organotin compounds are very toxic - tri-n- alkyltins are phytotoxic and depending on the organic groups, they can be powerful bactericides and fungicides
- resists corrosion from distilled, sea and soft tap water, but can be attacked by strong acids, alkalis, and acid salts