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The Periodic Table

Question

Why did Mendeleev leave gaps in the periodic table?

2 years ago

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Mariano Metz


1 Answer

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At the time of producing his periodic table, not every element had been discovered. Mendeleev recognised that there must be missing elements based on the properties of the ones that had, so left gaps for undiscovered elements which were found later - scandium, gallium and germanium for example.

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