1. 78
Platino –Platinum
Mass: 195,1 u
[Xe] 6s1
4f14
5d9
Melting point: 2041 K
Boiling point: 4098 K
Density: 21,09 g/cm3
Discovery: Antonio de Ulloa, 1735
Platinum is a really rare metal used mainly for making jewelery,
electronic and lab equipment. It's also used in cars in order to reduce
their carbon dioxide emissions. It was named platinum because it is very
similar to silver (in Spanish: plata)