INTRODUCTION
Silver is a white, lustrous metallic element that conducts heat and electricity better than any other metal.It has been known and valued as an ornamental and coinage metal since ancient times.It occurs in the pure state to a small extent.
Silver is the most malleable and ductile of all metals,with only the exception of gold.It is also found associated with pure gold in the form of an alloy known as electrum, and considerable amounts are recovered in the processing of gold.
BASIC INFORMATIONS
- Atomic Number
- 47
- Atomic Mass
- 107.8682
- Atomic radius
- 0.134
- Ionization energy
- 731
- Electronic config
- 2,8,18,18,1
- Principal Valency
- +1
- Density g/cm³
- 10.49
- Melting point °C
- 961.78
- Boiling point °C
- 2162
- Type of Element
- Metal
- Electronegativity
- 1.9
- Element Category
- Copper / coinage Group
- Appearance
- Silvery white solid
- Block
- d-block
- Period
- 5
- Group
- 11
- No of Isotopes
- 30
- Occurrence
- Free and combine
- Abundance in ppm
- 0.08
- Year of Discovery
- N/A
EXTRACTION
It occur as a free element or extract in the process of lead, copper, and zinc ores.
OXIDATION STATES
+3,+2,+1 (Amphoteric)
MAJOR SOURCE
Cerargyrite, Pyrargyrite, Sylvanite, Argentite.
EXAMPLES OF COMPOUND PRESENT
Silver nitrate, silver chloride, silver bromide
ECONOMIC IMPORTANCE
* Silver is used to coat smooth glass surfaces for mirrors by vaporization of the metal or by precipitation from a solution.
* Argyrol, a silver-protein compound, is a local antiseptic for the eyes, ears, nose, and throat.
* It is widely used in the circuitry of electrical and electronic components, and also for jewellery and ornaments.
* Its compound are used in the photographic fixing process.
