Development Of Periodic Table Flashcards

1
Q

John dalton periodic table

A

1808- 20 elements, random symbols, arranged increasing weight order

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2
Q

John Newlands periodic table

A

1864- 62 elements arranged in octaves (8), grouped similar reactions, not all elements found

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3
Q

Dimitri Mandeleev periodic table

A

1869- 63 elements arranged in order of increasing aromic weight and grouped by chemical similarity, left gaps for new elements

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