1. Presentation
Silver
Asst.Prof.Dr.Purit Thanakijkasem

2. Silver
Silver is a metallic chemical element with the chemical symbol Ag
it has the highest electrical conductivity of any element and the highest thermal conductivity of any metal

3. Occurrence the Silver Element
Silver ore is found in native form.
The other principal sources of silver are copper, copper-nickel, gold, lead and lead-zinc ores.
Found in Canada, Mexico, Peru, Australia and the USA.

4. Basic Information
Name: Silver Symbol: Ag Atomic Number: 47 Atomic Mass: amu Melting Point: °C Boiling Point: °C Number of Protons/Electrons: 47 Number of Neutrons: 61 Classification: Transition metal Crystal Structure: Cubic 293 K: 10.5 g/cm3 Color: silver

5. Atomic Structure Number of Energy Levels: 5 First Energy Level: 2
Second Energy Level: 8
Third Energy Level: 18
Fourth Energy Level: 18
Fifth Energy Level: 1
Atomic Structure

6. Physical properties Silver is soft white metal with a shiny surface
It is the most ductile and most malleable metal
It conducts heat and electricity better than any other element
It also reflects light very well.

7. Chemical properties Silver is a very inactive metal.
It does not react with oxygen in the air
It does react slowly with sulfur compounds in the air

8. The uses of Silver
Silver was one of the earliest metals used to make coins

9. The uses of Silver
Because silver is such a good conductor of electricity, it is used in many electrical applications such as switches, contacts and fuses

10. The uses of Silver
About 14 percent of silver in the world is used in jewelry and silverware

11. Silver's important role in film
Photographic film is coated with a thin layer of silver chloride, silver bromide, or silver iodide
44% of Silver world’s usage use in photo graphics film and paper

12. Present by Hataikan Plylahan 5310755342
Kanthicha Tawoncheewin

13. References http://en.wikipedia.org/wiki/Silver#References