Berilyum, magnezyum, kalsiyum, stronsiyum, baryum ve radyum toprak alkali metalleridir.
- Beryllium, magnesium, calcium, strontium, barium and radium are alkaline earth metals.
Doğal maden suyu kalsiyum, magnezyum, sodyum, potasyum ve ayrıca nitrat içerir.
- Natural mineral water contains calcium, magnesium, sodium, potassium as well as nitrate.