Division of periodic table into blocks periodic table has been classified into 4 blocks S block P block d block f block The division depends upon the type of atomic orbital .which receive the valence electron. for eg. Mg the valence electron enter the s orbital .so Mg belongs to s block. S block : it is present in the L. H. S of the periodic table .in all these elements the valence electron enter the s- orbital. so they are called s block elements. so s block consistint of 2 groups group (1) elements are called alkali metals for eg. Li, Na group (2) elements which soluble in water than formed hydroxide and form alkali. for eg. berillium, magnesium etc Electronic configurations of s block elements (ns^1-2) P block: it is present in the R. H. S of the periodic table. in all these elements the valence electron enter p orbital. so they are called p block el
inorganic chemistry inorganic chemistry, atomic structure, periodic properties, covalent bond ,ionic bond, orbital, shape of orbital, numericals, dual nature wave nature bohr's postulates, hinesberg principal, quantum numbers, pauli exclusive principal, aufbau principal, limitation, electronic configuration of lanthanoids and transition elements, screening effect, shielding effect, slater rule and it's limitation.