Alkaline Earth Metals
| Formula / Notation | Group 2: Be, Mg, Ca, Sr, Ba, Ra; ns² valence |
|---|---|
| Also Known As | Group 2 metals; Group IIA metals; ns² metals; alkaline earth elements; calcium group |
What is Alkaline Earth Metals?
The alkaline earth metals are the six elements in Group 2 (IIA) of the periodic table: beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra). They have two electrons in their outermost s-orbital and typically form +2 cations. They are less reactive than alkali metals but are still quite reactive, especially with acids and water.
Formula & Notation
Other Names / Synonyms: Group 2 metals; Group IIA metals; ns² metals; alkaline earth elements; calcium group
Properties & Characteristics
Uses & Applications
Safety Information
Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.
Key Facts
Frequently Asked Questions
The alkaline earth metals are the six elements in Group 2 (IIA) of the periodic table: beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra). They have two electrons in their outermost s-orbital and typically form +2 cations. They are less reactive than alkali metals but are still quite reactive, especially with acids and water.
Magnesium in lightweight alloys (aircraft, cars); calcium in biological systems (bones, teeth); barium sulfate as X-ray contrast agent; magnesium oxide in refractory materials; calcium hydroxide (lime) in construction; calcium in fertilisers; beryllium in aerospace alloys
Beryllium and its compounds are highly toxic (chronic beryllium disease, carcinogenic) — strict industrial hygiene required. Barium salts (except BaSO₄) are toxic. Magnesium powder is highly flammable. Radium is radioactive. Handle all alkaline earth metals with appropriate precautions.
The formula or notation for Alkaline Earth Metals is: Group 2: Be, Mg, Ca, Sr, Ba, Ra; ns² valence