Alkaline Earth Metals

1. Alkaline Earth Metals By: Laura Kane Lan Tran Jackson Moses

2. Group 2 Elements in the same groups have similar chemical properties

3. Beryllium was discovered by Nicholas Louis Vauquelin (1763-1829) at 1797 in France. • Origin of name: from the Greek word "beryllos" meaning "beryl". • Magnesium was discovered by Sir Humphrey Davy at 1755 in England. • Origin of name: from the Greek word "Magnesia", a district of Thessaly Beryllium Magnesium

4. Calcium was discovered by Sir Humphrey Davy at 1808 in England. • Origin of name: from the Latin word "calx" meaning "lime". • Strontium was discovered by Adair Crawford at 1790 in Scotland. • Strontium was discovered by Adair Crawford at 1790 in Scotland. Origin of name: named after the village of "Strontian" in Scotland.Origin of name: named after the village of "Strontian" in Scotland. Calcium Strontium

5. Barium was discovered by Sir Humphrey Davy at 1808 in England. • Origin of name: from the Greek word "barys" meaning "heavy". • Radium was discovered by Pierre and Marie Curie at 1898 in France. • Origin of name: from the Latin word "radius" meaning "ray". Barium Radium

6. Properties of the Atoms • Have smaller atomic radii than the alkali metals • Form ionic compounds but are mostly covalent • Have an oxidation number of 2, making them very reactive

7. Similarities at Atomic Level • Two electrons in their outer shell • Has a tendency to lose two electrons • In “s” sublevel • Have low electron affinities • Have low electronegativity

8. Physical Properties • Have strong metallic bonds • High melting points • High boiling points • High density • Ductile, malleable

9. Chemical Properties/Reactions Strontium-bright redCalcium-orange Barium-green Radium-crimson • Chemically reactive • Melts at such high temperatures, they remain solid in fires

10. Appearances and Similarities • Shiny, silvery-white colored • Found in most soils • They are used in batteries • Used in fireworks and flares (strontium)