Argint
47
Ag
Grupă
11
Perioadă
5
Bloc
d
Protoni
Electroni
Neutroni
47
47
61
Proprietăți Generale
Număr atomic
47
Masă atomică
107,8682
Numar de masa
108
Categorie
Metale de tranziție
Culoare
Argint
Radioactive
Nu
Cuvântul latin pentru argint este argentum
Structură cristalină
Față Centrată Cubic
Istoric
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.
Electroni pe nivelul de energie
2, 8, 18, 18, 1
Configurație electronică
[Kr] 4d10 5s1
In ancient Egypt and Medieval Europe, silver was often more valuable than gold
Proprietăți Fizice
Fază
Solid
Densitate
10,49 g/cm3
Punct de topire
1234,93 K | 961,78 °C | 1763,2 °F
Punct de fierbere
2435,15 K | 2162 °C | 3923,6 °F
Energie de fuziune
11,3 kJ/mol
Energie de evaporare
255 kJ/mol
Căldură specifică
0,235 J/g·K
Abundența în scoarța Pământului
7,9×10-6%
Abundența în Univers
6×10-8%
Credite imagine: Wikimedia Commons (Alchemist-hp)
A pure silver crystal, synthetic electrolytic made with visible dendritic structures
Numarul CAS
7440-22-4
Număr CID PubChem
23954
Proprietăți Atomice
Rază atomică
144 pm
Rază de covalență
145 pm
Electronegativitate
1,93 (Scara lui Pauling)
Potențial de ionizare
7,5762 eV
Volum molar
10,3 cm3/mol
Conductivitate termică
4,29 W/cm·K
Număr de oxidare
1, 2, 3
Aplicații
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
Izotopi
Izotopi stabili
107Ag, 109AgIzotopi instabili
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