Argent
47
Ag
Grup
11
Període
5
Bloc
d
Protons
Electrons
Neutrons
47
47
61
Propietats Generals
Nombre atòmic
47
Massa atòmica
107,8682
Nombre de massa
108
Categoria
Metalls de transició
Color
Plata
Radioactiu
No
The Latin word for silver is argentum
Estructura cristal·lina
Cara cúbica centrada
Història
Silver has been used for thousands of years for ornaments and utensils, for trade, and as the basis for many monetary systems.
Its value as a precious metal was long considered second only to gold.
Slag dumps in Asia Minor and on islands in the Aegean Sea indicate that man learned to separate silver from lead as early as 3000 BC.
Its value as a precious metal was long considered second only to gold.
Slag dumps in Asia Minor and on islands in the Aegean Sea indicate that man learned to separate silver from lead as early as 3000 BC.
Electrons per capa
2, 8, 18, 18, 1
Configuració electrònica
[Kr] 4d10 5s1
In ancient Egypt and Medieval Europe, silver was often more valuable than gold
Propietats Físiques
Fase
Sòlid
Densitat
10,49 g/cm3
Punt de fusió
1234,93 K | 961,78 °C | 1763,2 °F
Punt d'ebullició
2435,15 K | 2162 °C | 3923,6 °F
Entalpia de fusió
11,3 kJ/mol
Entalpia de vaporització
255 kJ/mol
Capacitat tèrmica específica
0,235 J/g·K
Abundància a l'escorça terrestre
7,9×10-6%
Abundància a l'univers
6×10-8%
Crèdits de les imatges: Wikimedia Commons (Alchemist-hp)
A pure silver crystal, synthetic electrolytic made with visible dendritic structures
Número CAS
7440-22-4
Número CID de PubChem
23954
Propietats Atòmiques
Radi atòmic
144 pm
Radi covalent
145 pm
Electronegativitat
1,93 (Escala de Pauling)
Potencial d'ionització
7,5762 eV
Volum atòmic
10,3 cm3/mol
Conductivitat tèrmica
4,29 W/cm·K
Estats d'oxidació
1, 2, 3
Aplicacions
Silver has long been valued as a precious metal, and is used as an investment, to make ornaments, jewelry, high-value tableware, utensils, and currency coins.
It is also used in electrical contacts and conductors, in mirrors and in catalysis of chemical reactions.
Its compounds are used in photographic film, and dilute silver nitrate solutions and other silver compounds are used as disinfectants and microbiocides
It is also used in electrical contacts and conductors, in mirrors and in catalysis of chemical reactions.
Its compounds are used in photographic film, and dilute silver nitrate solutions and other silver compounds are used as disinfectants and microbiocides
Silver is considered to be non-toxic
Isòtops
Isòtops estables
107Ag, 109AgIsòtops inestables
93Ag, 94Ag, 95Ag, 96Ag, 97Ag, 98Ag, 99Ag, 100Ag, 101Ag, 102Ag, 103Ag, 104Ag, 105Ag, 106Ag, 108Ag, 110Ag, 111Ag, 112Ag, 113Ag, 114Ag, 115Ag, 116Ag, 117Ag, 118Ag, 119Ag, 120Ag, 121Ag, 122Ag, 123Ag, 124Ag, 125Ag, 126Ag, 127Ag, 128Ag, 129Ag, 130Ag