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Edexcel IGCSE·Science·IGCSE Science (Double Award)

Atoms, Bonding & the Periodic Table

13 min read

Atomic structure, the periodic table, and ionic, covalent and metallic bonding.

Chemistry begins with the atom and how atoms bond.

Atomic structure

Protons (+1) and neutrons (0) sit in the nucleus; electrons (−1) occupy shells (2,8,82, 8, 82,8,8). Isotopes have the same protons but different neutrons.

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