Question

Lithium, sodium and potassium were put in one Group on the basis of their similar properties.

What is the name given to this Group or family?

Answer 1

1. Modern periodic table is the arrangement of elements on the basis of increasing atomic number in 7 horizontal rows and 18 vertical columns. Horizontal rows are termed as Periods while the vertical columns are termed as Groups.
2. Elements present in Group 1 of the periodic table except for Hydrogen (H) are termed as alkali metals. For example, Cesium (Cs). Lithium (Li), Sodium (Na), and Potassium (K) all belong to Group 1 and therefore, all three elements belong to the alkali metals family.