Question

what do you understand by the term periods and groups in the context of the periodic table​

Answer 1

Answer:

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. ... A group is a vertical column of the periodic table, based on the organization of the outer shell electrons. There are a total of 18 groups.

Answer 2

Answer:

Group, in chemistry, a column in the periodic table of the chemical elements. ... In a group, the chemical elements have atoms with identical valence electron counts and identical valence vacancy counts.

Explanation:

The periodic table is arranged in order of atomic number. A period is a horizontal row of the periodic table. A group is a vertical row of the periodic table.

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