Elements are discovered, they are not invented.
Barium is an element and therefore was not 'invented'. It was however first identified by Scheele in 1774 and was first isolated by Sir Humphrey Davy in 1808.
i did
Lead is a pure element, and therefore was not invented by anyone. It has been known as an element since ancient times. nobody invented lead . It's a natural product.
Aluminium always existed. It is an element and a metal which oxidizes easily.
Polonium is an element and was not invented but discovered.
the universe
no one did, its an element
Gold is a natural element, so it was never invented by people. It was discovered by people before humans started recording history, so it is unknown who was first to find it.
It's an element. It wasn't invented. It was created.
Nobody invented it, tin is a naturally occurring element.
No one invented ferrous metal. It is iron (Fe) which is an element, this was discovered not invented.