EVERYDAY SCIENCE

Detailed explanation-1: -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.

Detailed explanation-2: -Vertical columns in the periodic table starting from top to bottom are called groups. There are 18 groups in the modern periodic table. The elements of same group have same number of valence electrons.

Detailed explanation-3: -The vertical columns (groups) of the periodic table are arranged such that all its elements have the same number of valence electrons. All elements within a certain group thus share similar properties.

Detailed explanation-4: -Elements that have similar chemical properties are grouped in columns called groups (or families).

Detailed explanation-5: -The elements in each group have the same number of valence electrons. As a result, elements in the same group often display similar properties and reactivity.