actinium                    germanium                   protactinium
aluminium                   gold                        radium
aluminum                    hafnium                     radon
americium                   helium                      rhenium
antimony                    holmium                     rhodium
argon                       hydrogen                    rubidium
arsenic                     hydrogen_liquid             ruthenium
astatine                    indium                      samarium
barium                      iodine                      scandium
berkelium                   iridium                     selenium
beryllium                   iron                        silicon
bismuth                     krypton                     silver
boron                       lanthanum                   sodium
bromine                     lead                        strontium
cadmium                     lithium                     sulfur
calcium                     lutetium                    sulfur_1.92g_cm3
californium                 magnesium                   sulfur_2.07g_cm3
carbon_graphite_1.700g_cm3  manganese                   tantalum
carbon_graphite_2.000g_cm3  mercury                     technetium
carbon_graphite_2.265g_cm3  molybdenum                  tellurium
cerium                      neodymium                   terbium
cesium                      neon                        thallium
chlorine                    neptunium                   thorium
chromium                    nickel                      thulium
cobalt                      niobium                     tin
copper                      nitrogen                    titanium
curium                      osmium                      tungsten
dysprosium                  oxygen                      uranium
einsteinium                 palladium                   vanadium
erbium                      phosphorus                  xenon
europium                    platinum                    ytterbium
fermium                     plutonium                   yttrium
fluorine                    polonium                    zinc
francium                    potassium                   zirconium
gadolinium                  praseodymium
gallium                     promethium
