Who Arranged the Periodic Table by Atomic Number?
Henry Moseley did it! He reorganized the table by atomic number in 1913, which made way more sense than Mendeleev's original setup by atomic mass.
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Henry Moseley, a British physicist, arranged the periodic table by atomic number in 1913. This version is the one we use today!
Moseley. Absolutely a game-changer for chemistry!
It was Henry Moseley in 1913. Before him, it was organized by atomic mass, but his method is what we use now.
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