Jessica+Young-Masc

=== = JESSICA YOUNG-MASC page  =

__ Potassium  __ Element symbol: K Element: Potassium Elements old name: Kalium Mass number: 39.0983 Atomic number: 19 Number protons: 19 Number Neutrons: 20 Number electrons: 19 Discovery: Sir Humphrey Davy, 1807(England) Electron configuration: [AR]4s r Element classification: Alkali metal Density: 0.856 Description: soft, waxy, silver-white metal []

Bohr model of Potassium atom.

= Where is potassium found?? = Potassium ion is necessary for the function of all living cells, and is thus present in all plant and animal tissues. It is found in especially high concentrations within plant cells, and in a mixed diet, it is most highly concentrated in fruits. The high concentration of potassium in plants, associated with comparatively very low amounts of sodium there, historically resulted in potassium first being isolated from the ashes of plants ([|potash]), which in turn gave the element its modern name. Heavy crop production rapidly depletes soils of potassium, and agricultural fertilizers consume 93% of the potassium chemical production of the modern world economy. []