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| Appearance | | Appearance | ||
|greenish yellow,or yellowish green <br> [[image:Sample | |greenish yellow,or yellowish green <br> [[image:Sample of Chlorine.jpg|150px]] | ||
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| [[Periodic table group|Group]], [[Periodic table period|Period]], [[Periodic table block|Block]] | | [[Periodic table group|Group]], [[Periodic table period|Period]], [[Periodic table block|Block]] |
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