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In the periodic table,

have common properties,

periods

both groups and periods

neither groups nor periods

groups

User Shmosel
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2 Answers

3 votes

Answer:

both groups and periods

User Daniel Nelson
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4 votes

Answer:

groups

Step-by-step explanation:

Elements in the same group have similar chemical properties because they have the same number of outer electrons and the same valency

User Joe Love
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