Question

question 2 (1 point) which family of the periodic table have 1 valence electron, react violently with water, and form +1 ions? alkali metals alkali earth metals noble gases halogens

Explanation:

Alkali metals have 1 valence electron, react violently with water, and form +1 ions. Alkali - earth metals have 2 valence electrons, noble gases are stable with full - valence shells, and halogens have 7 valence electrons.

Answer:

A. alkali metals