what do you mean by periods and groups of periodic table ?
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In a periodic table, there are groups and periods. Groups are the vertical columns and periods are the horizontal rows.
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hey!
here is your answer
the horizontal lines that are numbered from 1 to 7. they increase from left to right
hope it helps you
have a wonderful day ahead
here is your answer
the horizontal lines that are numbered from 1 to 7. they increase from left to right
hope it helps you
have a wonderful day ahead
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