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Periodic Table of Elements

Periodic Table of Elements. Nonmetals. Nonmetals. Properties of nonmetals: Not shiny Not malleable (not bendable) Not ductile Poor conductors Atoms of almost all nonmetals have almost full outer shells. Group 17: Halogens. Properties of halogens 7 electrons in the outer shell

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Periodic Table of Elements

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  1. Periodic Table of Elements Nonmetals

  2. Nonmetals • Properties of nonmetals: • Not shiny • Not malleable (not bendable) • Not ductile • Poor conductors • Atoms of almost all nonmetals have almost full outer shells

  3. Group 17: Halogens • Properties of halogens • 7 electrons in the outer shell • Very reactive • React violently with alkali metals to form salts • Poor conductors of electric current • Never found uncombined in nature

  4. Group 18: Noble Gases • Properties of noble gases: • 8 electrons in the outer shell (except helium) • Unreactive (do not react with other elements under normal circumstances) • Colorless and odorless gases at room temperature • Found in small amounts in the earth’s atmosphere

  5. Hydrogen Stands Alone • Properties of hydrogen: • One electron in the outer shell • Reactive • Reacts explosively with oxygen • Odorless and colorless gas at room temperature • Low density

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