Question

what is periodic table? how many group and column does it contain​

Answer 1

Explanation:

In chemistry, a group (also known as a family) is a column of elements in the periodic table of the chemical elements. There are 18 numbered groups in the periodic table; the f-block columns (between groups 3 and 4) are not numbered.

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Answer 2

Answer:

Periodic table is a group of chemicals and elements

Explanation:

Till now, there are known to be 108 columns in the periodic table