Barium
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Alkaline Earth Metal
Family Group and Period
It is a Alkaline Earth Metal. It is part of the Beryllium Family. Fifth Element in Group 2
Barium's Atomic Number and Mass
Atomic Number is 56 and Atomic Mass is 137.327
Protons Neutrons Electrons and Symbol
Protons: 56
Electrons:56
Neutrons:81
Symbol: Ba
Where Barium was found
Barium was founded by Sir Humphry Davy , an english chemist. Barium is never found in free nature since it reacts with oxygen in the air. Forming Barium Oxide BaO.
Physical Property: Pure Barium is pale yellow , somewhat shiny , malleable metal. When heated Barium compounds give off a pale yellow-green flame.
Chemical Property: Active metal , combines easy with Oxygen , the Halogens , and other non-metals. Barium also reacts with water and most acids. It is so reactive it must be stored under kerosene , petroleum or some other oily liquid to prevent it from reacting with the Oxygen and Moisture in the air. Only Radium is more reactive.
Website: http://www.chemistryexplained.com/elements/A-C/Barium.html