Question

What will be the order of energy of following orbitals in H atom?
2s, 2p, 3s, 3p, 3d​

Answer 1

Answer:

For hydrogen the energy order of orbital is " " 1s lt 2s=2p lt 3s=3p=3d lt 4s=4p=4d=4f`

Answer 2

Answer:

2s<2p<3s<3p<3d

Explanation:

Energy of orbital of hydrogen depends upon n+l rule. For,

2s: n+l=2

2p: n+l=3

3s: n+l=3

3p: n+l=4

3d: n+l=5