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Lead-210 is particularly useful for helping to identify the ages of samples by measuring its ratio to lead-206 (both isotopes are present in a single decay chain). [51] In total, 43 lead isotopes have been synthesized, with mass numbers 178–220. [38] Lead-205 is the most stable radioisotope, with a half-life of around 1.70 × 10 7 years.
This is a list of prices of chemical elements.Listed here are mainly average market prices for bulk trade of commodities. Data on elements' abundance in Earth's crust is added for comparison.
Galena is the primary ore of lead, and is often mined for its silver content. [6] It is used as a source of lead in ceramic glaze. [27] Galena is a semiconductor with a small band gap of about 0.4 eV, which found use in early wireless communication systems.
Babbitt (copper, antimony, lead; used for bearing surfaces) Britannium (copper, antimony) [8] Pewter (antimony, copper) Queen's metal (antimony, lead, and bismuth) Solder (lead, antimony) Terne ; White metal, (copper or lead); used as base metal for plating, in bearings, etc.
Leaded copper is a metal alloy of copper with lead. A small amount of lead makes the copper easier to machine. Alloys with a larger amount of lead are used for bearings. Brass and bronze alloys of copper may have lead added and are then also sometimes referred to as leaded copper alloys. [1] Leaded copper and its alloys have been used since ...
Terne-coated stainless steel (TCS II or Roofinox), or copper is commonly used to replace terne metal roofs as either material will outlast terne metal. Terne-coated stainless steel roofing can last 100 years or more unpainted; copper roofing can last 50 years or more unpainted. [3] [4] Terne II used zinc in place of lead for environmental ...