Lawrence Berkeley National Laboratory
Berkeley Lab: Seaborgium
Article summarizing the naming of this element.
Environmental Chemistry
Environmental chemistry.com: Periodic Table Seaborgium
This site has an extensive amount of information on seaborgium.
Environmental Chemistry
Environmental chemistry.com: Periodic Table Hassium
As the name of this site implies, this is a huge reference site for elemental information. Whether you are looking for properties or isotopes, this site probably has what you need. Images of structure and electron energy level can be...