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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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17 févr. 1912 - -Frederick Soddy was an English chemist who in 1912, hypothesised that elements could exist in different forms, proposing the idea of isotopes.
Ajouté au bande de temps:
Yet
By
De-Hong Wong
15 oct. 2017
0
0
547
Date:
17 févr. 1912
Maintenaint
~ Il y a 113 ans
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