argon 19 calcium

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Pronunciation

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Singular
potassium

Plural
none

  1. (uncountable) Potassium is a soft, silvery metal that is never found unbound in nature. It has a symbol K and an atomic number of 19 and atomic weight of 39.0983. The symbol is taken from the Latin kalium.
    Potassium is a highly electronegative element.