Question

How energy of s p d and f orbital varies in periodic table

Answer 1

The s orbital can get two electrons while p, d and f orbitals can hold 6, 10 and 14 electrons separately. Generally, the electronic configuration of these elements is (n-1) d 1–10ns 1–2. ... The very name “transition” given to the elements of d-block is simply because of their position amongst s– and p– block elements.

Answer 2

the orbit varies due to the difference between the outer most shell or valence shell