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Gold ( Au )

General Description:

Experts of fossil study have observed that bits of natural gold were found in Spanish caves used by the Paleolithic Man about 40,000 B.C.

The density of gold (19.3 gcm-3) depends on both its atomic mass and the crystal structure. This makes gold rather heavy compared to some other common materials. For example, aluminium has a density of 2.7 gcm-3 and even steel's density is only 7.87 gcm-3.

The melting point of pure gold is 1064C, although when alloyed with other elements such as silver or copper the gold alloy will melt over a range of temperatures. The boiling point of gold, when gold transforms from the liquid to gaseous state, is 2860C.

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