March 2015 change
Welcome to Wikipedia. Your recent change to the page Hydrogen appears to have added wrong information and has been removed. If you think the information that you added was correct, please provide a source for the change or discuss it on the article's talk page. Please use the sandbox for any tests that you wish to make. Thank you. Auntof6 (talk) 11:10, 1 March 2015 (UTC)
- If this is a shared IP address, and you didn't make the change, consider creating an account for yourself so you can avoid further irrelevant notices.
 | This is the discussion page for a person who has not created an account yet, or who does not use it. We have to use the numerical IP address to identify them. An IP address can be shared by many people. If you feel that things said here are not about you, you can create an account or log in to stop it happening again. |