Question

27. The energies of orbitals of H-atom are in the order
(1) 35 < 3p < 45 < 3d < 4p
(2) 3s < 3p < 3d < 4s < 4p
(3) 3s = 3p = 3d < 4s = 4p
(4) 3s = 3p = 3d < 4s < 4p
(D​

Answer 1

Answer:

(2) 3s < 3p < 3d < 4s < 4p

I think...

this is the energy of orbitals order