Table of Contents
Noble Metals Periodic Table
Noble metals are a subset of metals that have very low reactivity. The noble metals are found in the sixth and seventh columns of the periodic table. They include gold, silver, platinum, and palladium. These metals are very resistant to corrosion and oxidation. They are used in jewelry, coins, and other decorative items.
A Noble Metal: Brief Explanation
A noble metal is a metal that is resistant to corrosion and oxidation. These metals include gold, silver, platinum, and palladium. They are called “noble” because they not reactive to other elements, and they also not corroded by other elements.
Silver (Ag)
It is a soft, white, lustrous transition metal, it has the highest electrical conductivity of any element and also the highest thermal conductivity of any metal.
Silver found in group 11 of the periodic table, it has the symbol Ag and an atomic number of 47. Silver is a soft metal with a Mohs hardness of 2.5. A good conductor of heat and electricity and used in electrical wiring and other electronic applications. Silver also used in jewelry and coinage.
Gold (Au)
Gold is a shiny, yellow metal. It is a good conductor of electricity and is very soft. It is also very heavy. Gold used in jewelry, coins, and other decorative items. It also used in some electronic devices.
Platinum (Pt)
Platinum is a ductile, malleable, precious, silver-white metal. It has a density of 21.45 g/cm3, is resistant to corrosion and oxidation, and is non-toxic. Platinum used in jewelry, electrical contacts and electrodes, catalysts, and also laboratory equipment.
Platinum found in nature as a native metal, alloyed with other metals, and in mineral deposits. It mined in South Africa, Russia, Canada, and the United States.
Palladium (Pd)
Palladium is a silvery-white metal that used in many industrial and commercial applications. It found in catalytic converters, electrical contacts, dental fillings, and jewelry. Palladium also used in the production of medical equipment and electronics.
Iridium (Ir)
A silver-white metal that is very rare on Earth but is found in meteorites. The most corrosion-resistant metal known. It used in metal alloys, especially for making strong springs.
Osmium (Os)
Osmium is a hard, brittle, bluish-white metal. It is the densest naturally occurring element and also is the most corrosion-resistant metal.
Osmium used in alloys with other metals, such as platinum and iridium, to make fountain pen tips, electrical contacts, and other high-precision instruments.
Abundance: 1 part per billion by weight
Origin: natural
Ruthenium (Ru)
Ruthenium is a Transition Metal with the symbol Ru and atomic number 44. A rare metal found in platinum ores and also used to make jewelry and other decorative items. Ruthenium has a melting point of about 2,500 degrees Fahrenheit and a boiling point of about 5,500 degrees Fahrenheit. It is a hard, silver-white metal that resistant to corrosion and also used in alloys.
Rhodium (Rh)
- Rhodium is a rare, silver-white metal that is a member of the platinum group of metals. It found in nature as a byproduct of nickel and copper mining.
- Rhodium used to make jewelry, coins, and other decorative items. It also used in catalytic converters to reduce emissions from automobiles.
- Rhodium has a very high melting point and is very resistant to corrosion. It is also very rare, making it expensive to mine and use.
