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Hydrogen
- Group 1 metals (alkali metals)
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Group 2 metals (alkaline earth metals)
- Groups 3-12 - Transition metals
- Group 13 - Boron group
- Group 14 - Carbon group
- Group 15 - Nitrogen group
- Group 16 - Oxygen group
- Group 17 - Halogens
- Group 18 - Noble gases
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