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.
JEE Main 2012 — Chemistry Inorganic Chemistry
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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