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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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24 dez 1931 ano - James Chadwick discovered neutrons and identified isotopes.
Adicionado na linha do tempo:
History of the Periodic Table
By
lily heavner
3 out 2017
0
0
558
Data:
24 dez 1931 ano
Agora
~ 93 years ago
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