Question

what do you mean by groups and periods in periodic table

Answer 1

Answer:

the vertical column is called is periods and horizontal column called groups

Answer 2

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➤ PERIODS IN PERIODIC TABLE

A period is a horizontal row of the periodic table. There are seven periods in the periodic table, with each one beginning at the far left.

➤ GROUPS

A group is a vertical column of the periodic table, based on the organization of the outer shell electrons.

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