name a metal that displaces hydrogen from cold water
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potassium n calcium
2K +2H20-> 2KOH + H2
2K +2H20-> 2KOH + H2
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all metals above the hydrogen in the reactivity series
like potassium, sodium, calcium ,magnesium aluminium,zinc,iron ,etc....
like potassium, sodium, calcium ,magnesium aluminium,zinc,iron ,etc....
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