HW 2.39

Maya Khoury
Posts: 29
Joined: Fri Apr 06, 2018 11:03 am

HW 2.39

So could someone just explain to me for homework problem 2. 39 how by looking at the electron configurations, you can tell if the atom is in ground state or an excited state?

AnnaYan_1l
Posts: 96
Joined: Fri Apr 06, 2018 11:05 am
Been upvoted: 1 time

Re: HW 2.39

Hi Maya! So you can basically determine whether an electron is in a ground state or an excited state by seeing whether the electron configurations violate Aufbau principle, Hund's rule, or the Pauli's exclusion principle. If an electron configuration violates any principle/rule, then it is representing the excited state. If it does not, then the electron configuration represents the ground state.

Hope that helps!

sylvie_1D
Posts: 31
Joined: Fri Apr 06, 2018 11:04 am

Re: HW 2.39

For number 39 electrons not int their lowest energy state possible are considered excited. For example, carbon is excited because it isn't at it's lowest energy configuration. In the 2p orbital instead of having two electrons in a one orbital, they should each occupy their own orbital as electrons want to be as far apart form each other as possible.