Questions with the keyword 'element'

• Are stars made of the same thing as the sun? by halle12 and 1 other. to Simon, Heather, James, Mark, Matthew . Comments: (No comments so far)
• Is there a specific number of isotopes that exist for an element. For example, could you have a Oxygen atom with only by mathiase to Heather, James, Mark, Matthew, Simon . Comments: (So far, one comment)