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Halogens Group 17 7 electrons in the outer shell All are non- metals Very reactive are often bonded with elements from Group 1 Color the Halogens.

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Presentation on theme: "Halogens Group 17 7 electrons in the outer shell All are non- metals Very reactive are often bonded with elements from Group 1 Color the Halogens."— Presentation transcript:

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3 Halogens Group 17 7 electrons in the outer shell All are non- metals Very reactive are often bonded with elements from Group 1 Color the Halogens

4 Halogens Elements in group 17 Very reactive, volatile, diatomic, nonmetals Always found combined with other element in nature. Used as disinfectants and to strengthen teeth.

5 Noble Gases Group 18 Exist as gases Non-metals 8 electrons in the outer shell = Full Helium (He) has only 2 electrons in the outer shell = Full Not reactive with other elements Color the noble gases

6 The Noble Gases Elements in group 18 VERY unreactive, monatomic gases Used in lighted “neon” signs Used in blimps to fix the Hindenberg problem. Have a full valence shell.

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