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In the periodic table, the periods are the
[A] vertical columns.
[B] horizontal rows.
[C] chemical families.
[D] blocks of elements.

User Itwasntme
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2 Answers

2 votes
B. Horizontal rows. The vertical columns are groups.
User Conrad Albrecht
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5 votes

Answer:

B. Horizontal rows

Step-by-step explanation:

I know a little about science so this should be right

User Spydernaz
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