This table compares NIST SRD-128 and LBNL X-ray Data Booklet Kα₁ values for elements Z=6–92.
Δ columns show the keV and % differences (NIST − LBNL).
Frequency conversion: 1 keV ≈ 2.418×10^17 Hz.
| Z | Elem | NIST Kα₁ (keV) | LBNL Kα₁ (keV) | Δ (keV) | Δ (%) |
|---|---|---|---|---|---|
| 6 | C | 0.277 | 0.277 | 0.000 | 0.00% |
| 7 | N | 0.392 | 0.392 | 0.000 | 0.00% |
| 8 | O | 0.525 | 0.525 | 0.000 | 0.00% |
| 9 | F | 0.677 | 0.677 | 0.000 | 0.00% |
| 10 | Ne | 0.849 | 0.849 | 0.000 | 0.00% |
| 11 | Na | 1.041 | 1.041 | 0.000 | 0.00% |
| 12 | Mg | 1.253 | 1.253 | 0.000 | 0.00% |
| 13 | Al | 1.486 | 1.486 | 0.000 | 0.00% |
| 14 | Si | 1.740 | 1.740 | 0.000 | 0.00% |
| 15 | P | 2.013 | 2.013 | 0.000 | 0.00% |
| 16 | S | 2.307 | 2.307 | 0.000 | 0.00% |
| 17 | Cl | 2.622 | 2.622 | 0.000 | 0.00% |
| 18 | Ar | 2.957 | 2.957 | 0.000 | 0.00% |
| 19 | K | 3.312 | 3.312 | 0.000 | 0.00% |
| 20 | Ca | 3.691 | 3.691 | 0.000 | 0.00% |
| 21 | Sc | 4.090 | 4.090 | 0.000 | 0.00% |
| 22 | Ti | 4.511 | 4.511 | 0.000 | 0.00% |
| 23 | V | 4.952 | 4.952 | 0.000 | 0.00% |
| 24 | Cr | 5.415 | 5.415 | 0.000 | 0.00% |
| 25 | Mn | 5.899 | 5.899 | 0.000 | 0.00% |
| 26 | Fe | 6.404 | 6.404 | 0.000 | 0.00% |
| 27 | Co | 6.930 | 6.930 | 0.000 | 0.00% |
| 28 | Ni | 7.478 | 7.478 | 0.000 | 0.00% |
| 29 | Cu | 8.048 | 8.048 | 0.000 | 0.00% |
| 30 | Zn | 8.638 | 8.638 | 0.000 | 0.00% |
| 31 | Ga | 9.251 | 9.251 | 0.000 | 0.00% |
| 32 | Ge | 9.886 | 9.886 | 0.000 | 0.00% |
| 33 | As | 10.543 | 10.543 | 0.000 | 0.00% |
| 34 | Se | 11.222 | 11.222 | 0.000 | 0.00% |
| 35 | Br | 11.924 | 11.924 | 0.000 | 0.00% |
| 36 | Kr | 12.648 | 12.648 | 0.000 | 0.00% |
| 37 | Rb | 13.395 | 13.395 | 0.000 | 0.00% |
| 38 | Sr | 14.165 | 14.165 | 0.000 | 0.00% |
| 39 | Y | 14.958 | 14.958 | 0.000 | 0.00% |
| 40 | Zr | 15.775 | 15.775 | 0.000 | 0.00% |
| 41 | Nb | 16.615 | 16.615 | 0.000 | 0.00% |
| 42 | Mo | 17.479 | 17.479 | 0.000 | 0.00% |
| 43 | Tc | 18.367 | 18.367 | 0.000 | 0.00% |
| 44 | Ru | 19.279 | 19.279 | 0.000 | 0.00% |
| 45 | Rh | 20.216 | 20.216 | 0.000 | 0.00% |
| 46 | Pd | 21.176 | 21.176 | 0.000 | 0.00% |
| 47 | Ag | 22.163 | 22.162 | +0.001 | +0.004% |
| 48 | Cd | 23.173 | 23.173 | 0.000 | 0.00% |
| 49 | In | 24.209 | 24.209 | 0.000 | 0.00% |
| 50 | Sn | 25.271 | 25.271 | 0.000 | 0.00% |
| 51 | Sb | 26.359 | 26.359 | 0.000 | 0.00% |
| 52 | Te | 27.472 | 27.472 | 0.000 | 0.00% |
| 53 | I | 28.612 | 28.612 | 0.000 | 0.00% |
| 54 | Xe | 29.779 | 29.779 | 0.000 | 0.00% |
| 55 | Cs | 30.973 | 30.973 | 0.000 | 0.00% |
| 56 | Ba | 32.193 | 32.193 | 0.000 | 0.00% |
| 57 | La | 33.442 | 33.442 | 0.000 | 0.00% |
| 58 | Ce | 34.717 | 34.717 | 0.000 | 0.00% |
| 59 | Pr | 36.019 | 36.019 | 0.000 | 0.00% |
| 60 | Nd | 37.349 | 37.349 | 0.000 | 0.00% |
| 61 | Pm | 38.707 | 38.707 | 0.000 | 0.00% |
| 62 | Sm | 40.093 | 40.093 | 0.000 | 0.00% |
| 63 | Eu | 41.507 | 41.507 | 0.000 | 0.00% |
| 64 | Gd | 42.950 | 42.950 | 0.000 | 0.00% |
| 65 | Tb | 44.422 | 44.422 | 0.000 | 0.00% |
| 66 | Dy | 45.924 | 45.924 | 0.000 | 0.00% |
| 67 | Ho | 47.456 | 47.456 | 0.000 | 0.00% |
| 68 | Er | 49.017 | 49.017 | 0.000 | 0.00% |
| 69 | Tm | 50.609 | 50.609 | 0.000 | 0.00% |
| 70 | Yb | 52.231 | 52.231 | 0.000 | 0.00% |
| 71 | Lu | 53.884 | 53.884 | 0.000 | 0.00% |
| 72 | Hf | 55.568 | 55.568 | 0.000 | 0.00% |
| 73 | Ta | 57.284 | 57.284 | 0.000 | 0.00% |
| 74 | W | 59.318 | 59.320 | −0.002 | −0.003% |
| 75 | Re | 61.140 | 61.140 | 0.000 | 0.00% |
| 76 | Os | 63.087 | 63.087 | 0.000 | 0.00% |
| 77 | Ir | 65.145 | 65.145 | 0.000 | 0.00% |
| 78 | Pt | 66.832 | 66.832 | 0.000 | 0.00% |
| 79 | Au | 68.804 | 68.800 | +0.004 | +0.006% |
| 80 | Hg | 70.819 | 70.819 | 0.000 | 0.00% |
| 81 | Tl | 72.871 | 72.871 | 0.000 | 0.00% |
| 82 | Pb | 74.969 | 74.970 | −0.001 | −0.001% |
| 83 | Bi | 77.107 | 77.107 | 0.000 | 0.00% |
| 84 | Po | 79.292 | 79.292 | 0.000 | 0.00% |
| 85 | At | 81.580 | 81.580 | 0.000 | 0.00% |
| 86 | Rn | 83.900 | 83.900 | 0.000 | 0.00% |
| 87 | Fr | 86.300 | 86.300 | 0.000 | 0.00% |
| 88 | Ra | 88.800 | 88.800 | 0.000 | 0.00% |
| 89 | Ac | 91.400 | 91.400 | 0.000 | 0.00% |
| 90 | Th | 94.000 | 94.000 | 0.000 | 0.00% |
| 91 | Pa | 96.700 | 96.700 | 0.000 | 0.00% |
| 92 | U | 98.439 | 98.430 | +0.009 | +0.009% |