In Credo Reference, you can search for "Periodic Table" or for individual elements and be taken to a results page with numerous resources from various dictionaries, encyclopedias, and handbooks. Some entries may be very short (like a brief definition) while others can be very long an detailed.
eLibrary includes many different types of sources (magazine articles, encyclopedia articles, and more). Start by typing the name of your element. If you get too many results that don't fit your topic, add more to the search using the examples below.