- Sodium chloride (NaCl): table salt, composed of positively charged sodium ions (Na+) and negatively charged chloride ions (Cl-).

- Potassium bromide (KBr): a white crystalline solid used in medicine and photography, composed of positively charged potassium ions (K+) and negatively charged bromide ions (Br-).

- Calcium fluoride (CaF2): a mineral known as fluorspar, composed of positively charged calcium ions (Ca2+) and negatively charged fluoride ions (F-).

- Magnesium oxide (MgO): a white powder used in the production of cement and fertilizers, composed of positively charged magnesium ions (Mg2+) and negatively charged oxide ions (O2-).

- Sodium sulfate (Na2SO4): a white crystalline solid used in the manufacture of detergents and glass, composed of positively charged sodium ions (Na+) and negatively charged sulfate ions (SO42-).