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In 1869, a total of 63 elements had been discovered by. A few were gases. Two were liquids. Most were solid metals.

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14y ago
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9y ago

Dmitri Mendeleev discovered scandium, gallium, technetium, and germanium. He also predicted the existence of more elements and developed the modern Periodic Table.

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11y ago

He proposed his periodic table, where he arranged the elements in the increasing order of atomic weights and repeating properties.

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13y ago

Periodic Table of Elements

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Q: What elements did Dmitri mendeleev discover?
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