User talk:82.21.168.151

April 2021
Hello, I'm ComplexRational. An edit that you recently made to Allotropes of oxygen seemed to be a test and has been reverted. If you want to practice editing, please use the sandbox. If you think a mistake was made, or if you have any questions, you can leave me a message on my talk page. Thanks! ComplexRational (talk) 16:19, 17 April 2021 (UTC)