Answer: The term “Typical elements of the periodic table” refers to the elements of the periodic table which have a fixed oxidation state. The periodic table is differentiated in some blocks according to the nature of atoms having similar kind of behaviour. The blocks are S block, P block, D block and F block. Among them, the typical elements lie in the S block and P block only. These elements are also referred to as “third period elements”.
For example, Sodium (Na), Magnesium (Mg) of S block and Aluminium (Al), Silicon (Si), Phosphorus (P), Sulphur (S) etc. of P block are typical elements.