s p d f blocks of the periodic table elements
Blocks in Periodic Table
The periodic table is divided into four blocks:
Group IA and IIA on the left side of the periodic table, form the s block. The final electron of the elements of these groups enter into the s-orbital hence they are called s-block elements.
Group IIIA to VIIIA(except helium) on the right side of the periodic table forms the p-block. The final electron of the elements of these groups enter into the p-orbital hence they are called p-block elements.
Group III B to group VIIIB and group I B and II B form the d-block of the periodic table.
The lanthanides and Actinides series located at the bottom of the periodic table constitute the f-block.