Topic 2 - Formation of ions

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Formation of Ions

Ions are made when Electrons are transferred

- Ions are charged particles

- When atoms lose or gain electrons they form ions, they are trying to get full outer shells which are very stable

- Metals form ions, they lose electrons to form positive ions

- Non-metals form ions, they gain electrons to form negative ions

- The number of electrons lost or gained is the same as the charge of the ion

Groups 1&2, 6&7 are most likely to form ions

- Group 1 and 2 elements are metals so they lose electrons to form positive ions (cations)

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