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The modern periodic table is organised into groups (columns) and periods (rows). Elements in the same period have similar __________. What completes the sentence?

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User Brittonv
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2 Answers

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Answer:

the same number of valence electrons

Step-by-step explanation:

User Shiyu
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Answer:different numbers of electrons in their valance shells

Explanation:voodoo$

User David Martins
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