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− | Potassium (K) is an alkali metal which is mainly present in high concentrations (160 mVal/l) in the cells. The concentration in the extracellular space and in the serum is only 4 mVal/l. | + | Potassium (K) is an alkali [[Metall/en|metal]] which is mainly present in high concentrations (160 mVal/l) in the cells. The concentration in the extracellular space and in the serum is only 4 mVal/l. |
− | https:// | + | https://en.wikipedia.org/wiki/Metal |