You are watching: How many protons does gold have
When gold is used as jewelry or for coins, it is generally not pure gold. Pure gold is called 24 karat gold and it is very soft. Generally gold is alloyed with other metals such as copper or silver in order to make it harder and more durable.Gold is used a lot in the electronics industry because of its good electrical conductivity and resistance to corrosion. Many electrical contacts and connectors are plated with gold for protection and reliability.Other applications for gold include heat shielding, dental work, cancer treatment, and decoration such as gold thread and gold plating.How was it discovered?Gold has been known about since ancient times. Civilizations such as Ancient Egypt used gold over 5000 years ago. It has long been a substance of value and wealth.Where did gold get its name?Gold gets its name from the Anglo-Saxon word "geolo" for yellow. The symbol Au comes from the Latin word for gold, "aurum."IsotopesGold has only one naturally occurring stable isotope: gold-197.Interesting Facts about GoldA single ounce of gold can be pounded into a sheet 300 feet wide by 300 feet long. That"s bigger than a football field! That same ounce can form a wire nearly 100 kilometers long.Gold can be pounded thin enough to allow light to shine through.If all the gold ever discovered by man was melted down it would form a cube with sides of about 25 meters each.
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