In reactions, do alkaline earth metals gain or lose electrons?

Lose electrons

Explanation:

All the alkaline earth metals have two electrons in their valence shell, so they lose two electrons to form cations with a 2+ charge. In chemical terms, all of the alkaline metals react with the halogens to form ionic alkaline earth metal halides.

if the concentration of products is decreased, the equilibrium will shift toward the products). add an inert gas (one that is not involved in the reaction) to the constant-volume reaction mixture: this will increase the total pressure of the system, but will have no effect on the equilibrium condition.

explanation: