This category for chemical elements articles whose importance as a chemical element has been assessed on this scale. Place articles in these categories by typing one of the following on the talk page:

((Chemical Element|class=XXX|importance=Top))

((Chemical Element|class=XXX|importance=High))

((Chemical Element|class=XXX|importance=Mid))

((Chemical Element|class=XXX|importance=Low))

See also Category:Chemical elements articles by quality.