The following table contains some of the atomic radius data used by CrystalMaker. This is a brief summary of a far more extensive body of work - please see the notes at the end of this page for more information.
| Atomic Number | Element Symbol | Atomic Radius [Å] | Ionic Radius [Å] | Covalent Radius [Å] | Van-der-Waals Radius [Å] | "Crystal" Radius [Å] |
| 1 | H | 0.53 | 0.25 | 0.37 | 1.20 | 0.10 |
| 2 | He | 0.31 | 0.31 | 0.32 | 1.40 | |
| 3 | Li | 1.67 | 1.45 | 1.34 | 1.82 | 0.90 |
| 4 | Be | 1.12 | 1.05 | 0.90 | 0.41 | |
| 5 | B | 0.87 | 0.85 | 0.82 | 0.25 | |
| 6 | C | 0.67 | 0.70 | 0.77 | 1.70 | 0.29 |
| 7 | N | 0.56 | 0.65 | 0.75 | 1.55 | 0.30 |
| 8 | O | 0.48 | 0.60 | 0.73 | 1.52 | 1.21 |
| 9 | F | 0.42 | 0.50 | 0.71 | 1.47 | 1.19 |
| 10 | Ne | 0.38 | 0.38 | 0.69 | 1.54 | |
| 11 | Na | 1.90 | 1.80 | 1.54 | 2.27 | 1.16 |
| 12 | Mg | 1.45 | 1.50 | 1.30 | 1.73 | 0.86 |
| 13 | Al | 1.18 | 1.25 | 1.18 | 0.53 | |
| 14 | Si | 1.11 | 1.10 | 1.11 | 2.10 | 0.40 |
| 15 | P | 0.98 | 1.00 | 1.06 | 1.80 | 0.31 |
| 16 | S | 0.88 | 1.00 | 1.02 | 1.80 | 0.43 |
| 17 | Cl | 0.79 | 1.00 | 0.99 | 1.75 | 1.67 |
| 18 | Ar | 0.71 | 0.71 | 0.97 | 1.88 | |
| 19 | K | 2.43 | 2.20 | 1.96 | 2.75 | 1.52 |
| 20 | Ca | 1.94 | 1.80 | 1.74 | 1.14 | |
| 21 | Sc | 1.84 | 1.60 | 1.44 | 0.89 | |
| 22 | Ti | 1.76 | 1.40 | 1.36 | 0.75 | |
| 23 | V | 1.71 | 1.35 | 1.25 | 0.68 | |
| 24 | Cr | 1.66 | 1.40 | 1.27 | 0.76 | |
| 25 | Mn | 1.61 | 1.40 | 1.39 | 0.81 | |
| 26 | Fe | 1.56 | 1.40 | 1.25 | 0.69 | |
| 27 | Co | 1.52 | 1.35 | 1.26 | 0.54 | |
| 28 | Ni | 1.49 | 1.35 | 1.21 | 1.63 | 0.70 |
| 29 | Cu | 1.45 | 1.35 | 1.38 | 1.40 | 0.71 |
| 30 | Zn | 1.42 | 1.35 | 1.31 | 1.39 | 0.74 |
| 31 | Ga | 1.36 | 1.30 | 1.26 | 1.87 | 0.76 |
| 32 | Ge | 1.25 | 1.25 | 1.22 | 0.53 | |
| 33 | As | 1.14 | 1.15 | 1.19 | 1.85 | 0.72 |
| 34 | Se | 1.03 | 1.15 | 1.16 | 1.90 | 0.56 |
| 35 | Br | 0.94 | 1.15 | 1.14 | 1.85 | 1.82 |
| 36 | Kr | 0.88 | 0.88 | 1.10 | 2.02 | |
| 37 | Rb | 2.65 | 2.35 | 2.11 | 1.66 | |
| 38 | Sr | 2.19 | 2.00 | 1.92 | 1.32 | |
| 39 | Y | 2.12 | 1.85 | 1.62 | 1.04 | |
| 40 | Zr | 2.06 | 1.55 | 1.48 | 0.86 | |
| 41 | Nb | 1.98 | 1.45 | 1.37 | 0.78 | |
| 42 | Mo | 1.90 | 1.45 | 1.45 | 0.79 | |
| 43 | Tc | 1.83 | 1.35 | 1.56 | 0.79 | |
| 44 | Ru | 1.78 | 1.30 | 1.26 | 0.82 | |
| 45 | Rh | 1.73 | 1.35 | 1.35 | 0.81 | |
| 46 | Pd | 1.69 | 1.40 | 1.31 | 1.63 | 0.78 |
| 47 | Ag | 1.65 | 1.60 | 1.53 | 1.72 | 1.29 |
| 48 | Cd | 1.61 | 1.55 | 1.48 | 1.58 | 0.92 |
| 49 | In | 1.56 | 1.55 | 1.44 | 1.93 | 0.94 |
| 50 | Sn | 1.45 | 1.45 | 1.41 | 2.17 | 0.69 |
| 51 | Sb | 1.33 | 1.45 | 1.38 | 0.90 | |
| 52 | Te | 1.23 | 1.40 | 1.35 | 2.06 | 1.11 |
| 53 | I | 1.15 | 1.40 | 1.33 | 1.98 | 2.06 |
| 54 | Xe | 1.08 | 1.08 | 1.30 | 2.16 | 0.62 |
| 55 | Cs | 2.98 | 2.60 | 2.25 | 1.81 | |
| 56 | Ba | 2.53 | 2.15 | 1.98 | 1.49 | |
| 57 | La | 1.95 | 1.95 | 1.69 | 1.36 | |
| 58 | Ce | 1.85 | 1.85 | 1.15 | ||
| 59 | Pr | 2.47 | 1.85 | 1.32 | ||
| 60 | Nd | 2.06 | 1.85 | 1.30 | ||
| 61 | Pm | 2.05 | 1.85 | 1.28 | ||
| 62 | Sm | 2.38 | 1.85 | 1.10 | ||
| 63 | Eu | 2.31 | 1.85 | 1.31 | ||
| 64 | Gd | 2.33 | 1.80 | 1.08 | ||
| 65 | Tb | 2.25 | 1.75 | 1.18 | ||
| 66 | Dy | 2.28 | 1.75 | 1.05 | ||
| 67 | Ho | 2.26 | 1.75 | 1.04 | ||
| 68 | Er | 2.26 | 1.75 | 1.03 | ||
| 69 | Tm | 2.22 | 1.75 | 1.02 | ||
| 70 | Yb | 2.22 | 1.75 | 1.13 | ||
| 71 | Lu | 2.17 | 1.75 | 1.60 | 1.00 | |
| 72 | Hf | 2.08 | 1.55 | 1.50 | 0.85 | |
| 73 | Ta | 2.00 | 1.45 | 1.38 | 0.78 | |
| 74 | W | 1.93 | 1.35 | 1.46 | 0.74 | |
| 75 | Re | 1.88 | 1.35 | 1.59 | 0.77 | |
| 76 | Os | 1.85 | 1.30 | 1.28 | 0.77 | |
| 77 | Ir | 1.80 | 1.35 | 1.37 | 0.77 | |
| 78 | Pt | 1.77 | 1.35 | 1.28 | 1.75 | 0.74 |
| 79 | Au | 1.74 | 1.35 | 1.44 | 1.66 | 1.51 |
| 80 | Hg | 1.71 | 1.50 | 1.49 | 1.55 | 0.83 |
| 81 | Tl | 1.56 | 1.90 | 1.48 | 1.96 | 1.03 |
| 82 | Pb | 1.54 | 1.80 | 1.47 | 2.02 | 1.49 |
| 83 | Bi | 1.43 | 1.60 | 1.46 | 1.17 | |
| 84 | Po | 1.35 | 1.90 | 1.08 | ||
| 85 | At | 1.27 | 1.27 | 0.76 | ||
| 86 | Rn | 1.20 | 1.20 | 1.45 | ||
| 87 | Fr | 1.94 | ||||
| 88 | Ra | 2.15 | 1.62 | |||
| 89 | Ac | 1.95 | 1.95 | 1.26 | ||
| 90 | Th | 1.80 | 1.80 | 1.19 | ||
| 91 | Pa | 1.80 | 1.80 | 1.09 | ||
| 92 | U | 1.75 | 1.75 | 1.86 | 0.87 | |
| 93 | Np | 1.75 | 1.75 | |||
| 94 | Pu | 1.75 | 1.75 | 1.00 | ||
| 95 | Am | 1.75 | 1.75 | 1.12 | ||
| 96 | Cm | 1.11 |