K(s) + H₂O(l) → KOH(aq) +H₂(g)

Group I

Na(s) + H₂O(l) → NaOH + H₂ (g)

Group I

Li(s) + H₂O(l) → LiOH(aq) +H₂(g)

Group I

Rb(s) + H₂O(l) → RbOH(aq) +H₂(g)

Group I

Cs(s) + H₂O(l) → CsOH(aq) +H₂(g)

Na + O₂ → Na₂O

K + O₂ → K₂O

Li + O₂ → Li₂O

Rb + O₂ → Rb₂O

Cs + O₂ → Cs₂O

Na + Cl₂ → NaCl

K + Cl₂ → KCl

K + Br₂ → KBr

Li + I₂ → LiI

Na+ Br₂ → NaBr