Question

On what bases element are
classified ​

Answer 1

Answer:

the elements in the modren periodic table are classified on the basis of the chemical properties where the properties are like in the aame group so that we can observe that the elements are are arranged in the vertical row know as groups

Answer 2

Answer:

there are nine basic groups of elements shown i periodic table.so elements are classified on the base of groups and periods in perodic table like group 1 alkali metal and period 1 or 2