Question

How are elements categorized in different blocks in the modern periodic table? which groups of elements are present in each of these blocks?

Answer 1

Explanation:

A block of the periodic table is a set of elements unified by the orbitals their valence electrons or vacancies lie in. ... The block names (s, p, d, and f) are derived from the spectroscopic notation for the value of an electron's azimuthal quantum number: sharp (0), principal (1), diffuse (2), or fundamental (3).