Question

The energies of orbitals of H-atom are in the order
(1) 3s < 3p < 4s < 3d < 4p
(2) 38 < 3p < 3d < 4s < 4p
(3) 3s = 3p = 3d < 48 = 4p
(4) 3s = 3p = 3d < 4s < 4p
explain it ?​

Answer 1

Answer:

answer is 3

as in H atom energies increases with increase in no. of orbits

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Answer 2

Answer:

3 3s = 3p = 3d < 4s = 4p

Explanation:

Usually, the energy of an orbital depends upon the value of n + L and if they have the same value after calculating n + L, we look at which has the higher n value.

But in hydrogen, we know that there is only one electron, so energy of the shells must depend only on n value.

Based on this concept, if we view the question, we can see that the energies of 3s, 3p and 3d will be equal and less than that of 4s and 4p