79 Karat

By: Harmanpreet Singh

Karat

An attractive and highly valued metal, gold has been known for at least 5500 years. Gold is sometimes found free in nature but it is usually found in conjunction with silver, quartz (SiO2), calcite (CaCO3), lead, tellurium , zinc or copper.

Gold Properties

Atomic Number: 79

Atomic Weight: 196.966569

Melting Point: 1337.33 K (1064.18°C or 1947.52°F)

Boiling Point: 3129 K (2856°C or 5173°F)

Density: 19.282 grams per cubic centimeter

Phase at Room Temperature: Solid

Element Classification: Metal

Period Number: 6

Group Number: 11

Group Name: none

Gold Images

Gold is weighed in Karats

Extra Info on Gold

Gold is a good conductor of heat and electricity and does not tarnish when it is exposed to the air, so it can be used to make electrical connectors and printed circuit boards. Gold is also a good reflector of infrared radiation and can be used to help shield spacecraft and skyscrapers from the sun's heat. Gold coated mirrors can be used to make telescopes that are sensitive to infrared light.