Periodic table

All the elements arranged by atomic number, in rows and columns that group elements with similar behaviour.

Level 1 · Foundation

All the elements arranged by atomic number, in rows and columns that group elements with similar behaviour.

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1
Foundation
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What's still between you and Periodic table, level 1, in the order you can learn it.

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ElementChemistry

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Makes these deeper

Once you know Periodic table, come back to these — they'll mean more.

AtomLevel 2The table's rows and columns are a map of how electrons fill an atom's shells. Come back to atoms once you can read it.