Question

In the periodic table the vertical columns are called _____.

• A. periods
• B. groups

Answer 1

Introduction:

The elements are arranged in groups and periods on similarity in chemical property and in increasing atomic number is called modern periodic table. The elements in periodic table are placed in periods and groups.

Groups are vertical columns. The groups have similar chemical properties. There are 18 groups in periodic table. The elements in groups have similar electronic configuration of the valence shell.

Final answer:

In the periodic table, the vertical columns are called groups.