| BOHRIUM | Synthetic radioactive chemical element, atomic no. 107, formerly called unnilseptium (7) |
| URANIUM | Silvery-white, radioactive chemical element, atomic number 92 (7) |
| FRANCIUM | Radioactive chemical element, atomic no. 87, discovered by French physicist Marguerite Perey (8) |
| SKULL | PlusWord No 107 |
| ERBIUM | Chemical element, atomic no. 68, used in some forms of laser surgery (6) |
| OSMIUM | Chemical element, atomic no 76 (6) |
| UNS | The symbol for the element unnilseptium (3) |
| THORIUM | Radioactive chemical element |
| FERMIUM | Synthetic radioactive metallic element (7) |
| RHODIUM | Chemical element, atomic number 45 (7) |
| YTTRIUM | Rare-earth element, atomic no. 39 (7) |
| KRYPTON | Inert gaseous element, atomic no 36 (7) |
| IRIDIUM | Element atomic no. 77 with a very high melting-point (7) |
| RHENIUM | Dense silvery-white metallic element (atomic no. 75) named after the Rhine river (7) |
| ARSENIC | Chemical element, atomic number 33 |
| ASTATINE | Radioactive chemical element of the halogen series occurring as a decay product of uranium and thorium; atomic no. 85 (8) |
| PLUTONIUM | Radioactive chemical element with the atomic number '94' (9) |
| BERKELIUM | Radioactive chemical element named after a city in California (9) |
| ACTINIUM | Which radioactive chemical element occurs in pitchblende (8) |
| AMERICIUM | Synthetic radioactive metallic element first produced in 1944 by neutron bombardment of plutonium; atomic no. 95 (9) |
