Gold (Au)
by Jaimini Ram

1. introduction
1.1. Atomic number 79
1.1.1. number of protons = number of electrons = 79
1.2. Symbol Au comes from Latin: Aurum
2. physical properties
2.1. In its purest form
2.1.1. ductile
2.1.2. malleable
2.1.3. reddish- yellow colour
2.1.4. dense
2.1.5. soft
2.2. Phase (at STP) solid
2.3. Melting point 1337.33 K (1064.18 °C, 1947.52 °F)
2.4. Boiling point 3243 K (2970 °C, 5378 °F)
2.5. Density (near r.t.) 19.30 g/cm3
3. atomic model of gold
3.1. electronic configuration
3.1.1. 2, 8, 18, 32, 18, 1
4. uses
4.1. used for making jewellery
4.2. making coins of very high value
4.3. used in dentistry for filling cavities in teeth
5. history & discovery
5.1. discovery
5.1.1. in the middle east in 6000bce
5.2. history
5.2.1. historically gold coinage was widely used as currency
5.2.2. when paper money was introduced
5.2.2.1. A reciept redeemable for a gold coin or bullion
6. unique chemical characteristic
6.1. gold- transition metal
6.2. transition metals are unique
6.3. this is because they can bod with other elements
6.4. and also can bond with outer most 2 shells
7. alloy
7.1. tumbaga
7.1.1. tumbaga is the name for a non-specific alloy of gold and copper given by Spanish Conquistadors
7.1.2. uses
7.1.2.1. Tumbaga was widely used by the pre-Columban cultures of Central America to make religious objects.