Question

Lithium, sodium, and potassium elements were put in one group on the basis of their similar properties. What are those similar properties?

Answer 1

Elements of lithium, sodium, and potassium have the following similar properties:

1. All these have one electron in the outermost shell.
2. They form unipositive ions.
3. They are good reducing agents.
4. They are soft metals.
5. They impart color to the flame.
6. The common name of the group is alkali metals [Group 1A].