Question

the correct order of increasing energy of atomic orbital for H-atom is​

Answer 1

Answer:

The subshells, in the order, of increasing energy will be as follows: 1s 2s 2p 3s 3p 4s 3d 4p 5s 4d 5p 6s 4f 5d 6p 7s 5f 6d 7p 8s 5g 6f 7d 8p.

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Answer 2

The correct order of increasing energy of the atomic orbital for H-atom is $1s < 2s = 2p < 3s=3p = 3d < 4s=4p=4d=4f < 5s=5p=5d=5f$

Explanation:

In the case of the hydrogen atom, the energy of the orbitals is determined by the value of the principal quantum number(n) only, since there is only one electron present in it and no interelectronic repulsions are present.

So, the lower the principal quantum number, the lower is the energy. And higher the value of the principal quantum number, the higher the energy, irrespective of the value of the azimuthal quantum number.

Thus, the order would be: $1s < 2s = 2p < 3s=3p = 3d < 4s=4p=4d=4f < 5s=5p=5d=5f$ and so on.