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Protons: 79 Electrons: 79 Neutrons: 118 Mass # : 197. By: Gerald Howse 5 th Hour 1-31-1. History. - PowerPoint PPT Presentation
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By: Gerald Howse5th Hour1-31-1
HistoryHistoryLatin Name Aurum, originally called “shining dawn.” No one can really say who discovered Gold because gold has been around for thousands of years B.C. and some say even early as prehistoric times• Egypt and especially Nubia had the resources to make them major gold-producing areas for much of history.
Description: Soft bright yellow transition metal.
Boiling Point: 3080K, 2807°C, 5085°F
Melting Point: 1337.73K, 1064.58°C, 1948.24°F
Density:19.32g/cc @ 300K Conductivity: Electrical: 0.452
106/cm ΩThermal: 3.17 W/cmK
Electron Configuration: 1s2 2s2p6 3s2p6d10 4s2p6d10f14 5s2p6d10 6s1
Electron Dot Formula: Au.
Information Gold - Au
Type of Ion: Cat ion Oxidation States: 3 , 1 Valence Electron: 1 Atomic Number:79 Group: 11 Period: 6 Transition Metal Isotopes: 18
Occurrences Heath Benefits Native gold is also found
in the form of free flakes, grains or larger nuggets that have been eroded from rocks and end up in alluvial deposits (called placer deposits)
Gold Salt have anti-inflammatory properties and are used in the treatment of arthritis and other similar conditions
Inject able Gold has been proven to help to reduce the pain and swelling of rheumatoid arthritis and tuberculosis.
Gold Alloys are use in dentistry in tooth restoration(crowns & permanent bridges)
Reactions Problems
Pure metallic (elemental) gold is non-toxic and non-irritating when ingested
Gold is chemically unreactive and exists in nature in its pure form.
Gold Salt are toxic to the liver and kidneys
Rare poisoning from Potassium gold cyanide
Gold contact allergies have affected mostly women but is relatively non-potent when compared to Nickel
GoldGold
Price
There is really no set price, the price of gold fluctuates and continues to change
It depends on the karat which is how pure the gold is 24 being the fineness
Also it is weighed by 1 troy ounce = 31.1 grams worth $1340.60
Uses Of GoldUses Of Gold
• Jewelry• Gold Flakes (food)• Thread• Coloring Agent (Cranberry Glass)• Reflective Layer On Cds• Protective Coating (Satellites)• Automobiles (Heating Dissipation)• Gold Toners (Photography)
Symbolism of GoldSymbolism of Gold
Symbolism Represents
Gold has been highly valued in many societies throughout the ages
Ex: Golden Medals awarded in athletic competitions and trophies (Olympic Games, Nobel Prize, & Gold Globe Awards)
Power Strength Wealth Warmth Happiness Love Hope Optimism
• Intelligence• Justice• Balance• Perfection• Summer• Harvest• Sun
BibliographyBibliography
http://environmentalchemistry.com/yogi/periodic/Au.html
http://en.wikipedia.org/wiki/Goldwww.periodictable.comwww.chemistry.about.comwww.webelements.comClass textbook