Silver
Element 47 on the periodic table, symbol Ag, group 11, period 5.
Silver is a chemical element with symbol Ag (Greek:άργυρος árguros, Latin: argentum, both from the Indo-European root *h₂erǵ- for "grey" or "shining") and atomic number 47. A soft, white, lustrous transition metal, it possesses the highest electrical conductivity, thermal conductivity and reflectivity of any metal. The metal occurs naturally in its pure, free form (native silver), as an alloy with gold and other metals, and in minerals such as argentite and chlorargyrite.
Appearance: lustrous white metal
Properties
- Atomic Number
- 47
- Atomic Mass
- 107.8682 u
- Group
- 11
- Period
- 5
- Block
- d-block
- Category
- Transition Metal
- State at 25 °C
- Solid
- Melting Point
- 1,234.9 K · 961.8 °C
- Boiling Point
- 2,435 K · 2,161.9 °C
- Density
- 10.49 g/cm³
- Atomic Radius
- 160 pm
- Electronegativity
- 1.93
- Oxidation States
- +1
- Abundance in Crust
- 0.075 mg/kg
- Discovered
- Known since antiquity
- Discovered By
- No individual credited
Electron Configuration
[Kr] 4d10 5s1
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s1 4d10
Ionisation Energies (kJ/mol)
- 1. 731
- 2. 2,070
- 3. 3,361
Elements near Silver
Elements in the same group share the number of outer electrons and behave in similar ways. Elements in the same period share a shell, so they change steadily from left to right.