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Chem Revision > Periodic Table > Flashcards

Periodic Table Flashcards

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1
Q

How are the elements arranged today?

A

By their atomic number.

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2
Q

How were the elements in the periodic table used to be arranged?

A

Before the discovery of protons neutrons and electrons the elements were ordered by their atomic mass.

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Chem Revision (6 decks)

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