Gold (Au)

1. atomic model of gold

1.1. electronic configuration

1.1.1. 2, 8, 18, 32, 18, 1

2. uses

2.1. used for making jewellery

2.2. making coins of very high value

2.3. used in dentistry for filling cavities in teeth

3. unique chemical characteristic

3.1. gold- transition metal

3.2. transition metals are unique

3.3. this is because they can bod with other elements

3.4. and also can bond with outer most 2 shells

4. introduction

4.1. Atomic number 79

4.1.1. number of protons = number of electrons = 79

4.2. Symbol Au comes from Latin: Aurum

5. physical properties

5.1. In its purest form

5.1.1. ductile

5.1.2. malleable

5.1.3. reddish- yellow colour

5.1.4. dense

5.1.5. soft

5.2. Phase (at STP) solid

5.3. Melting point 1337.33 K ​(1064.18 °C, ​1947.52 °F)

5.4. Boiling point 3243 K ​(2970 °C, ​5378 °F)

5.5. Density (near r.t.) 19.30 g/cm3

6. history & discovery

6.1. discovery

6.1.1. in the middle east in 6000bce

6.2. history

6.2.1. historically gold coinage was widely used as currency

6.2.2. when paper money was introduced

6.2.2.1. A reciept redeemable for a gold coin or bullion

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.