Electron Energy

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jane_ni_2d
Posts: 67
Joined: Fri Sep 28, 2018 12:23 am

Electron Energy

Postby jane_ni_2d » Mon Oct 22, 2018 6:16 pm

Why does the energy of the electron change when the hydrogen atom undergoes a transition from the 1s orbital to the 2p orbital because it says that "there are one 2s- and three 2p- orbitals in the shell and in hydrogen they all have the same energy"?

Ashley Zhu 1A
Posts: 69
Joined: Fri Sep 28, 2018 12:16 am

Re: Electron Energy

Postby Ashley Zhu 1A » Mon Oct 22, 2018 6:30 pm

When an e- transitions from the 1s orbital to the 2p orbital, it is moving to a higher energy state in a different shell (from n=1 to n=2). Since the 2s and 2p orbitals are all in the same shell, they all have the same energy in a hydrogen atom due to its degenerate nature.

dgerges 4H
Posts: 65
Joined: Fri Sep 28, 2018 12:24 am

Re: Electron Energy

Postby dgerges 4H » Thu Oct 25, 2018 10:31 pm

it is absorbing energy

Sophia Fox 4B
Posts: 29
Joined: Fri Sep 28, 2018 12:27 am

Re: Electron Energy

Postby Sophia Fox 4B » Fri Oct 26, 2018 12:20 am

I think you're asking two question here. The energy changes when the electron goes from 1s to 2p because the principle quantum number, which corresponds to size and energy, is changing from n = 1 to n = 2. For hydrogen, the orbitals in a certain energy level (ie: n = 1 or n = 2 or n = 3, etc) are degenerate, meaning they all have the same energy.


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