Element K

Potassium is the element being discussed. Some key facts provided are: Potassium has the atomic number 19, symbol K, and atomic mass of 39.0983. It is mostly found in bananas and metals. When found in metals, potassium is very reactive and can explode when exposed to even small amounts of water. Potassium can be converted to various salts used in fertilizers and soaps. It was first discovered in 1807 in London, England by Sir Humphrey Davy, and has uses in products like glass, soap, fertilizers, and gunpowder.