Building up on electron configurations

Moderators: Chem_Mod, Chem_Admin

plopezcordon_4C
Posts: 23
Joined: Fri Jun 23, 2017 11:39 am

Building up on electron configurations

Postby plopezcordon_4C » Sun Jul 16, 2017 11:59 pm

I get confused with electron configurations once I reach the p-block of any row. I feel like when you get to the first element on the p-block you shouldn't really include it since it's 1. Can someone please explain to me a little more clearly on what to do.Sorry I get pretty lost

Daniela_Chem14A
Posts: 27
Joined: Tue Nov 15, 2016 3:00 am

Re: Building up on electron configurations

Postby Daniela_Chem14A » Mon Jul 17, 2017 7:59 pm

I'm not really sure what you're exactly confused about but, I'm going to try to help as much as I possibly can.

The first thing you should know is that the rows are numbered and those numbers are the coefficients of the orbitals of the elements. For example, the 1st row is numbered 1 so the elements are written as Hydrogen=1s^1, Helium= 1s^2. If it were the second row, the configurations for the elements would be written as 2s^1 for Lithium, 2s^2 for Be, and so on. D-orbitals are special because it starts off with 3 as the coefficient even though they are located on row 4 but, this is something you should just memorize. The next thing you should memorize are the blocks. Know that the blocks refer to orbitals. Now your problem is dealing with p-blocks so first remember that the coefficient rule still applies. Then you should know that the p-block can hold up to 6 electrons. The way you write configurations is just by counting. The first column of the p-block will be raised to the power of 1, the second to the power of two, the third to the power of 3 and so on until you get to the power of 6. You repeat this for every row and the only thing that changes are the coefficient as you go down the rows that increase by 1. Also, make sure you know that all these numbers written as powers are referring to the number of electrons of each element in each orbital.


Hope this helps!

Payton Schwesinger 1J
Posts: 45
Joined: Fri Sep 29, 2017 7:04 am

Re: Building up on electron configurations

Postby Payton Schwesinger 1J » Fri Oct 20, 2017 4:30 pm

The first element in the P block has one electron in its P orbital, which is written as Px^1. As you move right, you will add one electron to the Py orbital and then the Pz orbital, and then begin to fill up the orbitals from the beginning until you reach the element at the end of that row, where the whole p orbital is full (6 electrons total).


Return to “Electron Configurations for Multi-Electron Atoms”

Who is online

Users browsing this forum: No registered users and 2 guests