Question

How many and which blocks are there in modern periodic table ? Write about them

Answer 1

★ There are 4 blocks in modern periodic table :

1) s-block : contain group 1 and 2 .

2) p-block : contain group 13 to 18 .

3) d-block : contain group 3 to 12 .

4) f-block : contain lanthenide and actinide series .