The elements calcium, strontium, and barium were put in one group of families on the basis of their similar properties, what are those similar properties and what is the usual name of this group of families?
Lithium Sodium and potassium were put in the same group on the basis of similar properties.
What is the similarity in their properties ?
Lithium, sodium and potassium were put in one Group on the basis of their similar properties. What are those similar properties?