1 jan 1913 ano - Niels Bohr He created an electron shell model that showed that the nucleus of an atom is small and positively charged and how electrons could orbit around the nucleus. Fun Fact: When he was awarded the Order of the Elephant by the Danish government, he designed his own coat of arms which featured a taijitu (symbol of yin and yang).

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If The Elements Could Talk

ByKayla

4 dez 2017

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