Question

What do elements in thr first two columns of the periodic table have in common?

Answer 1

All of the elements in a period have the same number of atomic orbitals. For example, every element in the top row has one orbital ring for its electrons. All of the elements in the second row have two orbital rings for their electrons

Answer 2

The initial two columns of the periodic table make the s-square, and the components in this square share practically speaking that they have a tendency to lose electrons to pick up soundness.