All the elements, on the basis of long form of periodic table, can be divided into four blocks, s, p — Periodic Table and Periodicity Chemistry Question

Question

All the elements, on the basis of long form of periodic table, can be divided into four blocks, s, p, d and f. The ionization energies, electron affinities, electronegativities, atomic and ionic radii and other physical properties usually shown a regular pattern of change within a group or along period with some irregularities.