Group 2:Alkaline Earth Metals

Janae Davis~Courtney Sipes~Heaven Anthony

Elements In This Group

Beryllium

Magnesium

Calcium

Strontium

Barium

Radium

Element Description

Strontium

Atomic Number~38

Atomic Mass~88

Symbol~Sr

Uses~A soft, silvery metal that burns in air and reacts with water. Strontium is best known for the brilliant reds its salts give to fireworks and flares.

Discovered By:William Cruickshank

Valence Electrons~2

Barium

Atomic Number~56

Atomic Mass~137

Symbol~Ba

Uses~Barium is used in fireworks to give a green colouration. Barium is used in medicine in the form of a Barium Meal (i.e. Barium Sulphate, BaSO4), is used as an X-Ray contrast medium

Discovered by~Carl Wilhelm scheele.

Valence Electrons~2

Radium

Atomic Number~88

Atomic Mass~227

Symbol~Ra

Uses~Radium had been used to make self-luminous paints for watches, aircraft instrument dials and other instrumentation, but has largely been replaced by cobalt-60, a less dangerous radioactive source.

Discovered By:Pierre Curie and Marie Curie

Valence Electrons~2

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What the Elements have in common

They are soft, silver metals that are less metallic in character than the group 1 Alkali Metals. All the elements in Group 2 have two electrons in their valence shells, giving them an oxidation state of +2.