User talk:Mahadkhan99

Thank you for your interest in editing Wikipedia. Your edit to Oxygen was successful, but because it was not considered beneficial to the article, the edit has been reverted or removed. If you would like to experiment with editing, please use the sandbox instead. Please take a look at the welcome page to learn more about contributing to this encyclopedia. Thank you. Materialscientist (talk) 00:05, 5 January 2012 (UTC)