Our Elements: blog https://vester.si/our-elements/blog/ Posts on Our Elements, newest first. en-us Mon, 26 Oct 2026 12:00:00 GMT Hydrogenium, the metal that was a gas https://vester.si/our-elements/blog/hydrogenium/?mtm_campaign=rss https://vester.si/our-elements/blog/hydrogenium/ Mon, 26 Oct 2026 12:00:00 GMT 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.