Question

the vertical columns in the periodic table are called​

Answer 1

Answer:

The vertical columns on the periodic table are called groups or families because of their similar chemical behavior. All the members of a family of elements have the same number of valence electrons and similar chemical properties. The horizontal rows on the periodic table are called periods.

Explanation:

Answer 2

Answer:

The vertical columns in the periodic table are called​ "Groups".

Explanation:

There are 18 groups in a periodic table. All the elements of a group have similar chemical properties but there is a difference in the physical properties of the elements in a group.

In a group from to to bottom the size of atoms increases due to addition of shells. In a particular group the number of valance electrons remain same for all  the elements. Some of the groups are given special names to identify their elements. These names are alkali metals , alkali earth metals, chalcogens, noble gases, etc.