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1999-09-18
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440b
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8 lines
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.