• Periodic table by NNDC at Brookhaven National Laboratory
  • Nuclear Data resource by NNDC at Brookhaven National Laboratory
  • Periodic table by Chris Heilman at Phoenix College, Arizona
  • Periodic Table at Chemistry Department, Los Alamos National Laboratory
  • Elemental Data Index by NIST, National Institute of Standards & Technology
  • Periodic Table by Chemglobe
  • Periodic Table by WebElements
  • Interactive chemical elements by Yinon Benton