Symbol | Sn |
Atomnummer | 50 |
Gruppe | 14 ( Kulstof-silicium-gruppe) |
Periode | 5 |
Blok | p |
Klassifikation | Andre metaller |
Udseende | Silvery-white (beta, β) or gray (alpha, α) |
Farve | Sølv |
Antal protoner | 50 p+ |
Antal neutroner | 69 n0 |
Antal elektroner | 50 e- |
Fase ved STP | Fast |
Massefylde | 7.365 g/cm3 |
Atommasse | 118.711 u |
Smeltepunkt | 505.08 K 231.93 °C 449.474 °F |
Kogepunkt | 2875 K 2601.85 °C 4715.33 °F |
Fordampningsvarme | 290.37 kJ/mol |
Elektronegativitet (Pauling Scale) | 1.96 |
Elektronaffinitet | 107.298 kJ/mol |
Oxidationstrin | −4, −3, −2, −1, 0, +1, +2, +3, +4 (an amphoteric oxide) |
Ioniseringsenergier |
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Opdaget | Asia Minor (3500 fvt.) |
Opdagelse af tin Tin extraction and use can be dated to the beginnings of the Bronze Age around 3000 BC, when it was observed that copper objects formed of polymetallic ores with different metal contents had different physical properties. The earliest bronze objects had a tin or arsenic content of less than 2% and are believed to be the result of unintentional alloying due to trace metal content in the copper ore. The oldest artifacts date from around 2000 BC. |