page_title: Barium
hierarchical_section_title: Barium
caption_attribution_description: Bildbeschreibung: oxidiertes Barium Quelle: Foto aus meiner Elementesammlung Fotograf/Zeichner: Tomihahndorf Datum: April 2006
context_page_description: Barium is chemical element 56 on the periodic table. Its symbol is Ba. It contains 56 protons and 56 electrons. Its mass number is about 137.3. It is a metal.
context_section_description: Barium is chemical element 56 on the periodic table. Its symbol is Ba. It contains 56 protons and 56 electrons. Its mass number is about 137.3. It is a metal.
caption: Corroded barium metal
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