If an atom has five valence electrons how many electrons does it need to gain to achieve a stable electron configuration

An aqueous solution of potassium hydroxide is standardized by titration with a 0.194 m solution of hydrobromic acid. if 25.2 ml of base are required to neutralize 24.2 ml of the acid, what is the molarity of the potassium hydroxide solution? m potassium hydroxide

The drawing represents the movement of particles in a substance. what changes of state can this substance undergo

Consider the elements bromine and chlorine; which elements has a larger ionic radius ?