We do not know- copper was one of the first metals used by humans, and THAT first use was about 11,000 years ago. No records from that long ago.
The element was discovered by (insert name of scientist or researcher).
Francium was discovered by Marguerite Perey in 1939.
its a element on earth , and georguis agricola discovered it in 1530...
Chlorine was discovered by Carl Wilhelm Scheele in 1774. However, Sir Humphry Davy is credited with recognizing chlorine as an element in 1810.
it was discovered by ace
Well, honey, copper was discovered by our ancient ancestors around 10,000 years ago. They probably stumbled upon it while playing with some rocks and thought, "Hey, this shiny stuff looks cool!" So, there you have it, copper was discovered by some clever early humans who had a knack for finding cool things in nature.
Sn is the chemical symbol for the metal Tin. Towards the end of the period referred to by archaeologists as the Stone Age, skilled metal workers discovered that adding a small ammount of tin to copper produced a metal which was harder and more durable than the pure copper they had been using for making tools etc. This alloy is now known as Bronze, and the invention of it started the next period which archaeologists refer to as the Bronze Age. This all happened approximately 5000 years ago, or 3000 BC.
The meaning of protactinium is before actinium. The name is from 1949, probably selected by IUPAC.
Mercury ( well i am assuming you mean the element not the planet) has been known since ancient times so we dont quite know when it was discovered or by whom.
.... No?
Carbon was never really discovered. Carbon's discoverer and date of discovery is unknown. Some people believe that it was discovered in 2500 BCE. Carbon was discovered by "accident"
The oven was discovered by O. Ven, for whom it is named, who also discovered the Ven diagram.