Page 1 of 1

Energy of bound and free electrons

Posted: Sun Oct 14, 2018 7:50 pm
by Alexandra Albers 1D
In the atomic spectra video, Dr. Lavelle says that -VE sign means that a bound e- has lower energy than a free e-. What does he mean by "bound" and "free" electrons?

Re: Energy of bound and free electrons

Posted: Sun Oct 14, 2018 7:56 pm
by arif_latif_2G
"Free" means that the electron is not a part of an atom so it is just an electron that is "free-roaming"
Bound means that the electron is part of an atom so its "Bound to the nucleus"
I hope this clear up any confusion.

Re: Energy of bound and free electrons

Posted: Mon Oct 15, 2018 11:00 am
by Alexandra Albers 1D
It does, thank you!

Re: Energy of bound and free electrons

Posted: Mon Oct 15, 2018 5:13 pm
by Karan Thaker 2L
this is understandable as a detached electron was likely excited and is also free to interact with other atoms (thus giving it high PE). A bound electron also has high PE, but is still bound to the atom and is being held there by stable bonds (so less energy).