| 1 | H | idrogeno | ma= 1,008 u | χ= 2,20 |
| 2 | He | elio | ma= 4,003 u | χ= - |
| 3 | Li | litio | ma= 6,941 u | χ= 0,98 |
| 4 | Be | berillio | ma= 9,012 u | χ= 1,57 |
| 5 | B | boro | ma= 10,81 u | χ= 2,04 |
| 6 | C | carbonio | ma= 12,01 u | χ= 2,55 |
| 7 | N | azoto | ma= 14,01 u | χ= 3,04 |
| 8 | O | ossigeno | ma= 16,00 u | χ= 3,44 |
| 9 | F | fluoro | ma= 19,00 u | χ= 3,98 |
| 10 | Ne | neon | ma= 20,18 u | χ= - |
| 11 | Na | sodio | ma= 22,99 u | χ= 0,93 |
| 12 | Mg | magnesio | ma= 24,31 u | χ= 1,31 |
| 13 | Al | alluminio | ma= 26,98 u | χ= 1,61 |
| 14 | Si | silicio | ma= 28,09 u | χ= 1,90 |
| 15 | P | fosforo | ma= 30,97 u | χ= 2,19 |
| 16 | S | zolfo | ma= 32,07 u | χ= 2,58 |
| 17 | Cl | cloro | ma= 35,45 u | χ= 3,16 |
| 18 | Ar | argon | ma= 39,95 u | χ= - |
| 19 | K | potassio | ma= 39,10 u | χ= 0,82 |
| 20 | Ca | calcio | ma= 40,08 u | χ= 1,00 |
| 21 | Sc | scandio | ma= 44,96 u | χ= 1,36 |
| 22 | Ti | titanio | ma= 47,87 u | χ= 1,54 |
| 23 | V | vanadio | ma= 50,94 u | χ= 1,63 |
| 24 | Cr | cromo | ma= 52,00 u | χ= 1,66 |
| 25 | Mn | manganese | ma= 54,94 u | χ= 1,55 |
| 26 | Fe | ferro | ma= 55,85 u | χ= 1,83 |
| 27 | Co | cobalto | ma= 58,93 u | χ= 1,88 |
| 28 | Ni | nichel | ma= 58,96 u | χ= 1,91 |
| 29 | Cu | rame | ma= 63,55 u | χ= 1,90 |
| 30 | Zn | zinco | ma= 65,38 u | χ= 1,65 |
| 31 | Ga | gallio | ma= 69,72 u | χ= 1,81 |
| 32 | Ge | germanio | ma= 72,63 u | χ= 2,01 |
| 33 | As | arsenico | ma= 74,92 u | χ= 2,18 |
| 34 | Se | selenio | ma= 78,96 u | χ= 2,55 |
| 35 | Br | bromo | ma= 79,90 u | χ= 2,96 |
| 36 | Kr | cripton | ma= 83,80 u | χ= 3,00 |
| 37 | Rb | rubidio | ma= 85,47 u | χ= 0,82 |
| 38 | Sr | stronzio | ma= 87,62 u | χ= 0,95 |
| 39 | Y | ittrio | ma= 88,91 u | χ= 1,22 |
| 40 | Zr | zirconio | ma= 91,22 u | χ= 1,33 |
| 41 | Nb | niobio | ma= 92,91 u | χ= 1,60 |
| 42 | Mo | molibdeno | ma= 95,95 u | χ= 2,16 |
| 43 | Tc | teczenio | ma= 98,91 u | χ= 1,90 |
| 44 | Ru | rutenio | ma= 101,10 u | χ= 2,20 |
| 45 | Rh | rodio | ma= 102,90 u | χ= 2,28 |
| 46 | Pd | palladio | ma= 106,40 u | χ= 2,20 |
| 47 | Ag | argento | ma= 107,90 u | χ= 1,93 |
| 48 | Cd | cadmio | ma= 112,40 u | χ= 1,69 |
| 49 | In | indio | ma= 114,80 u | χ= 1,78 |
| 50 | Sn | stagno | ma= 118,70 u | χ= 1,96 |
| 51 | Sb | antimonio | ma= 121,80 u | χ= 2,05 |
| 52 | Te | tellurio | ma= 127,60 u | χ= 2,10 |
| 53 | I | iodio | ma= 126,90 u | χ= 2,66 |
| 54 | Xe | xenon | ma= 131,30 u | χ= 2,60 |
| 55 | Cs | cesio | ma= 132,90 u | χ= 0,79 |
| 56 | Ba | bario | ma= 137,30 u | χ= 0,89 |
| 57 | La | lantanio | ma= 138,90 u | χ= 1,10 |
| 58 | Ce | cerio | ma= 140,10 u | χ= 1,12 |
| 59 | Pr | praseodimio | ma= 140,90 u | χ= 1,13 |
| 60 | Nd | neodimio | ma= 144,20 u | χ= 1,14 |
| 61 | Pm | promezio | ma= 145,00 u | χ= - |
| 62 | Sm | samario | ma= 150,40 u | χ= 1,17 |
| 63 | Eu | europio | ma= 152,00 u | χ= - |
| 64 | Gd | gadolinio | ma= 157,30 u | χ= 1,20 |
| 65 | Tb | terbio | ma= 158,90 u | χ= 1,20 |
| 66 | Dy | disprosio | ma= 162,50 u | χ= 1,22 |
| 67 | Ho | olmio | ma= 164,90 u | χ= 1,23 |
| 68 | Er | erbio | ma= 167,30 u | χ= 1,24 |
| 69 | Tm | tulio | ma= 168,90 u | χ= 1,25 |
| 70 | Yb | itterbio | ma= 173,00 u | χ= 1,10 |
| 71 | Lu | lutezio | ma= 175,00 u | χ= 1,27 |
| 72 | Hf | afnio | ma= 178,50 u | χ= 1,30 |
| 73 | Ta | tantalio | ma= 180,90 u | χ= 1,50 |
| 74 | W | tungsteno | ma= 138,80 u | χ= 2,36 |
| 75 | Re | renio | ma= 186,20 u | χ= 1,90 |
| 76 | Os | osmio | ma= 190,20 u | χ= 2,20 |
| 77 | Ir | iridio | ma= 192,20 u | χ= 2,20 |
| 78 | Pt | platino | ma= 195,10 u | χ= 2,28 |
| 79 | Au | oro | ma= 197,00 u | χ= 2,54 |
| 80 | Hg | mercurio | ma= 200,60 u | χ= 1,90 |
| 81 | Tl | tallio | ma= 204,40 u | χ= 2,04 |
| 82 | Pb | piombo | ma= 207,20 u | χ= 2,33 |
| 83 | Bi | bismuto | ma= 209,00 u | χ= 2,02 |
| 84 | Po | polonio | ma= 209,00 u | χ= 2,00 |
| 85 | At | astato | ma= 210,00 u | χ= 2,20 |
| 86 | Rn | radon | ma= 222,00 u | χ= - |
| 87 | Fr | francio | ma= 223,00 u | χ= 0,70 |
| 88 | Ra | radio | ma= 226,00 u | χ= 0,90 |
| 89 | Ac | attinio | ma= 227,00 u | χ= 1,10 |
| 90 | Th | torio | ma= 232,00 u | χ= 1,30 |
| 91 | Pa | protoattinio | ma= 231,00 u | χ= 1,50 |
| 92 | U | uranio | ma= 238,00 u | χ= 1,38 |
| 93 | Np | nettunio | ma= 237,00 u | χ= 1,36 |
| 94 | Pu | plutonio | ma= 2,44 u | χ= 1,28 |
| 95 | Am | americio | ma= 243,00 u | χ= 1,30 |
| 96 | Cm | curio | ma= 247,00 u | χ= 1,30 |
| 97 | Bk | berkelio | ma= 247,00 u | χ= 1,30 |
| 98 | Cf | californio | ma= 251,00 u | χ= 1,30 |
| 99 | Es | einsteinio | ma= 252,00 u | χ= 1,30 |
| 100 | Fm | fermio | ma= 257,00 u | χ= 1,30 |
| 101 | Md | mendelevio | ma= 258,00 u | χ= 1,30 |
| 102 | No | nobelio | ma= 259,00 u | χ= 1,30 |
| 103 | Lr | laurenzio | ma= 262,00 u | χ= 1,30 |
| 104 | Rf | rutherfordio | ma= 261,00 u | χ= - |
| 105 | Db | dubnio | ma= 262,00 u | χ= - |
| 106 | Sg | seaborgio | ma= 266,00 u | χ= - |
| 107 | Bh | bohrio | ma= 264,00 u | χ= - |
| 108 | Hs | hassio | ma= 265,00 u | χ= - |
| 109 | Mt | meitnerio | ma= 268,00 u | χ= - |
| 110 | Ds | darmstadio | ma= 271,00 u | χ= - |
| 111 | Rg | roentgenio | ma= 272,00 u | χ= - |
| 112 | Cn | copernicio | ma= 285,00 u | χ= - |