User talk:2405:204:840E:BEA2:FC4A:4BED:9983:A26A

August 2019
Hello, I'm Mike Novikoff. I wanted to let you know that one or more of your recent contributions to Effective nuclear charge have been undone because they did not appear constructive. If you would like to experiment, please use the sandbox. If you have any questions, you can ask for assistance at the help desk. Thanks. — Mike Novikoff 16:21, 2 August 2019 (UTC)
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