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Chemistry, 04.07.2019 21:00 tami490

Answer these ! 23 points! 1. why is hydrogen set apart by itself? 2. how do valence electron configurations of the alkali metals compare with each other? 3. why are the alkaline-earth metals less reactive than the alkali metals? 4. in which groups of the periodic table do the transition metals belong? 5. what properties do the halogens have in common?

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