home *** CD-ROM | disk | FTP | other *** search
- Potassium, an extremely reactive metal, is the seventh most common
- abundant element, making up over 1% of the Earth's crust. It is
- necessary for plant growth, and is a component of most fertilizers. It's
- also an essential nutrient, deficiencies can cause muscle cramps. It is
- usually obtained from potassium salt (KCl). One of the isotopes is a
- long lived radioisotope, and a small bottle of salt substitute (KCl) is
- slightly radioactive.