Presentation Silver Asst.Prof.Dr.PuritThanakijkasem
Silver • Silver is a metallic chemical element with the chemical symbol Ag • it has the highest electrical conductivity of any element and the highest thermalconductivity of any metal
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.
Basic Information • Name:Silver Symbol:Ag Atomic Number:47 Atomic Mass:107.8682 amuMelting Point:961.93 °C Boiling Point:2212.0 °C Number of Protons/Electrons:47 Number of Neutrons:61 Classification:Transition metalCrystal Structure:Cubic Density @ 293 K:10.5 g/cm3Color:silver
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
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.
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
The uses of Silver • Silver was one of the earliest metals used to make coins
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
The uses of Silver • About 14 percent of silver in the world is used in jewelry and silverware
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
Present by • HataikanPlylahan 5310755342 • KanthichaTawoncheewin 5310755656
References • http://en.wikipedia.org/wiki/Silver#References • www.google.com • http://www.australianminesatlas.gov.au/education/down_under/silver/used.html • www.chemistryexplained.com