Jacqueline Philp

Name: Potassium
Symbol: K
Atomic Number: 19
Atomic Mass: 39.0983
Standard State: solid at 298
Group name: Alkali Metal
Period in Periodic Table: 4
Color:silvery white
Classification: Metallic

Potassium was discoverd by Sir Humphrey Davy in England at 1807. It is found in most soil and is 1.5% of earth's crust. The metal is so soft that you can cut it with a knife.Potassium will light on fire when water is mixed with it. It is used for fertilizer.