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4. explain why do elements in groups share more chemical properties than elements in a period?
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4. explain why do elements in groups share more chemical properties than
elements in a period?

User Holly Cummins
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Answer:

The tend to share the same number of outer electrons. Halogens, for example all have 7 outer electrons, and therefore there oxidation number is -1.

Step-by-step explanation:

User Israel Morales
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