Question

tell me about groups in periodic table..... ​

Answer 1

Answer:

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.

Answer 2

Answer:

there are 7 groups and 18 periods in the periodic table