Reactivity with water increases on moving down the Goup from Li to Cs as Li<Na <K<Rb<Cs. This is due to increase in electropositive character. Hence Rb reacts most vigorously with water.
Which one of the following will react most vigorously with water?
Held on 19 May 2012 · Verified 6 Jul 2026.
Li
K
Rb
Na
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