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Periodic table
Timeline of chemical elements discoveries
Atomic number
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Key terms: elements table periodic atomic weight periodic table chemical mendeleev discovery properties included discovered chemistry moseley chemical element substance meyer classified predicted similar atomic numbers newlands classical element groups lavoisier new elements tellurium triads concept actinide chemical properties potassium arranged octaves proposed iodine these elements known elements noble gas complete argon henry moseley valence z Search external links cited by footnotes on Wikipedia page History of the periodic table: |
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