Were does the name lithium come from?

Answer 1

Lithium was discovered by Swedish chemist, Johann August Arfvedson in 1817. He discovered it inside a mineral called petalite. Arfvedson was trying to identify the elements which made up petalite, but was unable to figure out what the last 10% was. He decided it must be a new element, so he named it lithium from the Greek word "lithos" which means "stone".