D and F block elements

How does filling of valence electrons takes place in p-block, d-block and f-block elements?

Introduction of d-block elements: - position in periodic table| Trick to learn d-block elements and d-block elements vs transition elements

D and F block introduction|Properties of d & f block elements metallic|Atomic radius|Melting point |Ionisation energy

How many groups are there in p-block elements and d-block elements ?

What are the d- block elements? Write any four properties of d - block elements and give their general outer electronic configuration.