A compound with a positive charge (cation) is called a cationic compound, while a compound with a negative charge (anion) is called an anionic compound. Examples of cationic compounds include ammonium ion (NH4+), sodium ion (Na+), and magnesium ion (Mg2+). Examples of anionic compounds include chloride ion (Cl−), sulfate ion (SO42−), and nitrate ion (NO3−).
