the first 20 element of the periodic table
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Atomic number: 13 Symbol: Al Aluminum Atomic mass: 26.982
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Atomic number: 16 Symbol: S Sulfur Atomic mass 32.066
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Atomic number: 13 Symbol: Al Aluminum Atomic mass: 26.982
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Atomic number: 16 Symbol: S Sulfur Atomic mass 32.066
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