Jdrum00

Hello, Jdrum00 and a belated welcome to Wikipedia! I see that you've already been around awhile and wanted to thank you for your contributions. Though you seem to have been successful in finding your way around, you may benefit from following some of the links below, which help one get the most out of Wikipedia. If you have any questions you can ask me on my talk page, or place {{helpme}} on your talk page and ask your question there. Please remember to sign your name on talk pages by clicking or by typing four tildes "~~~~"; this will automatically produce your name and the date. If you are interested in learning more about contributing, you might want to consider being "adopted" by a more experienced editor or joining a WikiProject to collaborate with others in creating and improving articles of your interest. Click here for a directory of all the WikiProjects. Finally, please do your best to always fill in the edit summary field. Happy editing! Red Director (talk) 17:35, 18 May 2018 (UTC) Getting Started Wikipedia Tutorial • The five pillars of Wikipedia How to: edit a page • upload an image Getting Help Frequently Asked Questions Where to ask questions or make comments Request administrator attention Policies and Guidelines Neutral point of view • Reliable sources Verifiability • Citing sources • No original research What Wikipedia is not • Biographies of living persons Simplified Manual of Style • Three-revert rule Copyrights • Policy for non-free content • Image use policy External links • Spam • Vandalism • Sock puppetry Deletion policy • Conflict of interest • Notability The Community Community Portal • Adopt-a-user program Assume good faith • Civility • Etiquette No personal attacks • Resolving disputes Build consensus • Village pump Signpost • IRC channels • Mailing lists Things to do Be bold in editing • Help develop an article Pages needing attention • Peer review Join a WikiProject • Translating articles Cleaning up: General • Spam • Vandalism Miscellaneous Categories • Disambiguity • Stubs User pages • Talk pages Useful templates • Tools • User scripts

Electron configurations

I undid your edit to Block (periodic table) because the original text had the correctly written electron configuration. It may seem counterintuitive at first, but electron configurations do not include the symbol of the element they describe. They instead use the preceding noble gas as shorthand for that element's electron configuration, and explicitly include the remaining energy levels after the noble gas configuration. For example, the electron configuration of sodium (Na) is 1s² 2s² 2p⁶ 3s¹; notice that 3s¹ is a new energy level above the configuration of neon, so it can be abbreviated to [Ne] 3s¹.

If you have any further questions, feel free to ping me, or ask at the reference desk. Happy editing! ComplexRational (talk) 16:03, 28 December 2019 (UTC)

Extremely sorry -- I did some Googling to see whether it was some convention I wasn't familiar with, and failed to turn this up. "Correcting" something incorrectly is a casual editor's nightmare, so thanks very much for catching it! Might be useful to link to the article on electron configuration, to keep the know-just-enough-to-be-dangerous crowd (like me) from being confused. Jdrum00 (talk) 03:11, 30 December 2019 (UTC)