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| navigate by keyword : alkali arrangement barium beryllium calcium compound earth education elements group groupof left magnesium main metals oxidation periodic radioactive radium reactive represented science second strontium system |
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| Arrangement with the elements of the second main groupof the periodic system. From left: beryllium, Magnesium, Calcium, Strontium, Barium, and Radium represented with a compound |
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Stockphotos.ro (c) 2025. All stock photos are provided by Dreamstime and are copyrighted by their respective owners. |
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