7 avr. 1864 - Newland
Description:
In 1864, Newland ordered elements by atomic masses, and realized that each 8th element was similar, like in music. But, he could only order up to calcium, and the rest did not follow the rule.Later, 7 more elements were discovered that did not fit the rule.
Ajouté au bande de temps:
Date:
7 avr. 1864
Maintenaint
~ Il y a 160 ans
