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April 1, 2024
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dec 27, 1912 - Bohr Planetary Model a planetary model in which the negatively-charged electrons orbit a small, positively-charged nucleus. Was only accurate with only one electron elements (1913) Henry Moseley Made Moseley’s law, which states that the frequency of x-ray radiation has a mathematical relationship to an element's atomic number. (1913)

Added to timeline:

12 Nov 2019
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307
Chemistry

Date:

dec 27, 1912
Now
~ 111 years ago
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