Question

main group elements are arranged in how many groups
(a)6
(b)7
(c)8
(d)10​

Answer 1

The periodic table of the chemical elements. The columns represent the groups. Groups 1, 2 and 13 to 18 constitute the main group. Sometimes groups 3 and 12, as well as the lanthanides and actinides (the two rows at the bottom), are also included in the main group