What are the electron configurations of all the elements?

See Periodic Table Link

See the Web Links to the left for a pdf file with a periodic table which shows the electronic configuration (in shorthand notation) for each element. You can also use the WebElements link and select each element to view its electronic configuration.

Shorthand notation marks the electron configuration starting with the noble gas element in the previous row. To write out the complete configuration, just write down the configuration for that noble gas in place of the name of the noble gas (you may have to do this several times if you are writing the configuration of an element towards the bottom of the periodic table -- just keep working backwards until you get to the first 1s orbital.

For example:
The shorthand configuration for iodine (I) is listed as: [Kr]5s²4d¹⁰5p⁵.

First, we must add on the configuration for krypton (Kr) in front:

[Ar]4s²3d¹⁰4p⁶5s²4d¹⁰5p⁵.

But since Kr is given in terms of argon (Ar), we must keep going:

[Ne]3s²3p⁶4s²3d¹⁰4p⁶5s²4d¹⁰5p⁵.

And again for neon (Ne):

1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶5s²4d¹⁰5p⁵

Now we've got everything, so the complete electron configuration for iodine (I) is:

1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶5s²4d¹⁰5p⁵

Follow the aufbau chart for order of filling - 1s, 2s, 3p, 4s, 3d, 4p, 5s, 4d, 5p and so on.

First answer by JEK. Last edit by Misso. Contributor trust: 7 [recommend contributor]. Question popularity: 47 [recommend question]