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28-07-2021
Chemistry

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Which of the following refers to the horizontal rows of the periodic table?
O A. Groups
O B. Periods
O C. Atomic numbers
O D. Elements

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HistoryDoctor71 HistoryDoctor71

28-07-2021

Answer:

B. Periods

Explanation:

The horizontal rows in the periodic table are periods.

on the picture below, u can see an example

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