The atomic size of sodium is smaller than that of the sodium why?

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

Part of molten rock at mid-ocean ridges

How will the emission of an alpha particle affect the atomic number of an atom