When calcium metal is placed in water a vigorous single replacement rection occurs, releasing hydrogen gas. What will happen to the pH of the solution that forms as this chemical reaction proceeds

The pH of the solution increases

Explanation:

One of the properties of metals is that they react with water to yield hydrogen gas and the hydroxide of the metal.

Calcium is a metal in group two of the periodic table and also undergoes such reaction.

The equation of the reaction is;

Ca(s) + 2H2O(l) > Ca(OH)2(aq) + H2(g)

Since Ca(OH)2 is alkaline, the pH of the solution increases.

if two electrons have the same n, the same ℓ, and the same ml, then they are in the same orbital. the pauli exclusion principle states that no two identical fermions (a fancy word for electrons and other subatomic particles like electrons) may occupy the same quantum state in an atom simultaneously.