| Element | Symbol | Atomic Number | Classification |
| Actinium | Ac | 89 | Radioactive element (28.44). |
| Aluminium | Al | 13 | Base metal (Chapter 76). |
| Americium | Am | 95 | Radioactive element (28.44). |
| Antimony | Sb | 51 | Base metal (81.10). |
| Argon | Ar | 18 | Rare gas (28.04). |
| Arsenic | As | 33 | Non.metal (28.04). |
| Astatine | At | 85 | Radioactive element (28.44). |
| Barium | Ba | 56 | Alkaline.earth metal (28.05). |
| Berkelium | Bk | 97 | Radioactive element (28.44). |
| Beryllium | Be | 4 | Base metal (81.12). |
| Bismuth | Bi | 83 | Base metal (81.06). |
| Boron | B | 5 | Non.metal (28.04). |
| Bromine | Br | 35 | Non.metal (28.01). |
| Cadmium | Cd | 48 | Base metal (81.07). |
| Caesium | Cs | 55 | Alkali metal (28.05). |
| Calcium | Ca | 20 | Alkaline.earth metal (28.05). |
| Californium | Cf | 98 | Radioactive element (28.44). |
| Carbon | C | 6 | Non.metal (28.03). (But see 38.01 for artificial graphite.) |
| Cerium | Ce | 58 | Rare.earth metal (28.05). |
| Chlorine | Cl | 17 | Non.metal (28.01). |
| Chromium | Cr | 24 | Base metal (81.12). |
| Cobalt | Co | 27 | Base metal (81.05). |
| Copper | Cu | 29 | Base metal (Chapter 74). |
| Curium | Cm | 96 | Radioactive element (28.44). |
| Dysprosium | Dy | 66 | Rare.earth metal (28.05). |
| Einsteinium | Es | 99 | Radioactive element (28.44). |
| Erbium | Er | 68 | Rare.earth metal (28.05). |
| Europium | Eu | 63 | Rare.earth metal (28.05). |
| Fermium | Fm | 100 | Radioactive element (28.44). |
| Fluorine | F | 9 | Non.metal (28.01). |
| Francium | Fr | 87 | Radioactive element (28.44). |
| Gadolinium | Gd | 64 | Rare.earth metal (28.05). |
| Gallium | Ga | 31 | Base metal (81.12). |
| Germanium | Ge | 32 | Base metal (81.12). |
| Gold | Au | 79 | Precious metal (71.08). |
| Hafnium | Hf | 72 | Base metal (81.12). |
| Helium | He | 2 | Rare gas (28.04). |
| Holmium | Ho | 67 | Rare.earth metal (28.05). |
| Hydrogen | H | 1 | Non.metal (28.04). |
| Indium | In | 49 | Base metal (81.12) |
| Iodine | I | 53 | Non.metal (28.01). |
| Iridium | Ir | 77 | Precious metal (71.10). |
| Iron | Fe | 26 | Base metal (Chapter 72). |
| Krypton | Kr | 36 | Rare gas (28.04). |
| Lanthanum | La | 57 | Rare.earth metal (28.05). |
| Lawrencium | Lr | 103 | Radioactive element (28.44). |
| Lead | Pb | 82 | Base metal (Chapter 78). |
| Lithium | Li | 3 | Alkali metal (28.05). |
| Lutetium | Lu | 71 | Rare.earth metal (28.05). |
| Magnesium | Mg | 12 | Base metal (81.04). |
| Manganese | Mn | 25 | Base metal (81.11). |
| Mendelevium | Md | 101 | Radioactive element (28.44). |
| Mercury | Hg | 80 | Metal (28.05). |
| Molybdenum | Mo | 42 | Base metal (81.02). |
| Neodymium | Nd | 60 | Rare.earth metal (28.05). |
| Neon | Ne | 10 | Rare gas (28.04). |
| Neptunium | Np | 93 | Radioactive element (28.44). |
| Nickel | Ni | 28 | Base metal (Chapter 75). |
| Niobium | Nb | 41 | Base metal (81.12). |
| Nitrogen | N | 7 | Non- metal (28.04). |
| Nobelium | No | 102 | Radioactive element (28.44). |
| Osmium | Os | 76 | Precious metal (71.10). |
| Oxygen | O | 8 | Non.metal (28.04). |
| Palladium | Pd | 46 | Precious metal (71.10). |
| Phosphorus | P | 15 | Non.metal (28.04). |
| Platinum | Pt | 78 | Precious metal (71.10). |
| Plutonium | Pu | 94 | Radioactive element (28.44). |
| Polonium | Po | 84 | Radioactive element (28.44). |
| Potassium | K | 19 | Alkali metal (28.05). |
| Praseodymium | Pr | 59 | Rare.earth metal (28.05). |
| Promethium | Pm | 61 | Radioactive element (28.44). |
| Protactinium | Pa | 91 | Radioactive element (28.44). |
| Radium | Ra | 88 | Radioactive element (28.44). |
| Radon | Rn | 86 | Radioactive element (28.44). |
| Rhenium | Re | 75 | Base metal (81.12). |
| Rhodium | Rh | 45 | Precious metal (71.10). |
| Rubidium | Rb | 37 | Alkali metal (28.05). |
| Ruthenium | Ru | 44 | Precious metal (71.10). |
| Samarium | Sm | 62 | Rare.earth metal (28.05). |
| Scandium | Sc | 21 | Classified with the rare.earth metals (28.05). |
| Selenium | Se | 34 | Non.metal (28.04). |
| Silicon | Si | 14 | Non.metal (28.04). |
| Silver | Ag | 47 | Precious metal (71.06). |
| Sodium | Na | 11 | Alkali metal (28.05). |
| Strontium | Sr | 38 | Alkaline.earth metal (28.05). |
| Sulphur | S | 16 | Non.metal (28.02). (But see 25.03 for crude sulphur). |
| Tantalum | Ta | 73 | Base metal (81.03). |
| Technetium | Tc | 43 | Radioactive element (28.44). |
| Tellurium | Te | 52 | Non.metal (28.04). |
| Terbium | Tb | 65 | Rare.earth metal (28.05). |
| Thallium | Tl | 81 | Base metal (81.12). |