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Hydrogenium, the metal that was a gas
In 1869 Thomas Graham, Master of the Royal Mint, had coin-sized pieces of hydrogen-filled palladium struck and stamped “Hydrogenium”. He thought the hydrogen in them was a metal.
In 1869 Thomas Graham, Master of the Royal Mint, had coin-sized pieces of hydrogen-filled palladium struck and stamped “Hydrogenium”. He thought the hydrogen in them was a metal.