mendeleev table period
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mendeleev table period |
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| navigate by keyword : aluminium argon atom atomic background beaker blocks chart chemical chemistry chlorine class color compare configuration different education electronegative electrons element frame full gas graphic groups illustration isolated lab lavoisier magnesium mass mendeleev molecule nature nuclear number order periodic periods phosphorus physics research row school science scientific script shot signs silicon sodium sulfur symbols systematize table teach technique technology text typescript valence vector weight |
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| Period 3 from the periodic system of chemical elements |
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