Tecken | Ag |
Atomnummer | 47 |
Grupp | 11 (Myntmetaller) |
Period | 5 |
Block | d |
Ämnesklass | Övergångsmetall |
Utseende | Lustrous white metal |
Färg | Silver |
Antal protoner | 47 p+ |
Antal neutroner | 61 n0 |
Antal elektroner | 47 e- |
Fas vid STP | Fast |
Densitet | 10.49 g/cm3 |
Relativ atommassa | 107.868 u |
Smältpunkt | 1234.93 K 961.78 °C 1763.204 °F |
Kokpunkt | 2435 K 2161.85 °C 3923.33 °F |
Ångbildningsvärme | 250.63 kJ/mol |
Elektronegativitet (Paulingskalan) | 1.93 |
Elektronaffinitet | 125.862 kJ/mol |
Oxidationstal | −2, −1, +1, +2, +3 (an amphoteric oxide) |
Jonisationspotential |
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Upptäckt | Asia Minor (5000 f.Kr.) |
Upptäckten av silver Silver was one of the seven metals of antiquity that were known to prehistoric humans and whose discovery is thus lost to history. But probably silver was discovered in Asia Minor shortly after copper and gold. In particular, the three metals of group 11, copper, silver, and gold, occur in the elemental form in nature and were probably used as the first primitive forms of money as opposed to simple bartering. However, unlike copper, silver did not lead to the growth of metallurgy on account of its low structural strength, and was more often used ornamentally or as money. |