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Birthdate
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returned to St. pertersburg & Defended his masters thesis, "Research" 7 theroies in Expansions of substances due to heat.
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found that if you arange the elements in order of increasing atomic mass then their chemical properties demonstrated definite trends
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Wrote his first book on the Spectroscope in Heidelberg
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Creates the first ever perodic table
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He trsansforemed Saint Petersburg into an internationally recognized center for research of chemistry
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He is awarded the Nobel Prize in chemistry for his discovery of the perodic system
