- Known / Stable (strict) / Unstable / Predicted / Gap
- Representative nuclear γ (if operationally meaningful) and its frequency
- Kα₁ X-ray line (accurate values for Z ≥ 6) and its frequency
- Clear context
Frequency conversion used: f [Hz]≈EkeV×2.418×1017f \,[\text{Hz}] \approx E_{\text{keV}} \times 2.418\times10^{17}.
## Master Isotope Table + γ & Kα (Batch 1: Z = 1–20)
| Z | Elem | Known | Stable | Unstable | Pred. | Gap | Nuclear γ (keV) | f(γ) (Hz) | Kα₁ (keV) | f(Kα₁) (Hz) | Context |
|---:|:---:|---:|---:|---:|---:|---:|---:|---:|---:|---:|---|
| 1 | H | 7 | 2 | 5 | 17 | 10 | — | — | — | — | β-only (³H) |
| 2 | He | 9 | 2 | 7 | 21 | 12 | — | — | — | — | noble gas |
| 3 | Li | 11 | 2 | 9 | 26 | 15 | — | — | — | — | no standard γ (very soft X-ray region) |
| 4 | Be | 12 | 1 | 11 | 28 | 16 | — | — | — | — | no standard γ (very soft X-ray region) |
| 5 | B | 13 | 2 | 11 | 31 | 18 | — | — | — | — | no standard γ (very soft X-ray region) |
| 6 | C | 15 | 2 | 13 | 36 | 21 | — | — | **0.277** | **6.70×10^16** | XRF Kα₁ |
| 7 | N | 16 | 2 | 14 | 38 | 22 | — | — | **0.392** | **9.48×10^16** | XRF Kα₁ |
| 8 | O | 17 | 3 | 14 | 40 | 23 | — | — | **0.525** | **1.27×10^17** | XRF Kα₁ |
| 9 | F | 18 | 1 | 17 | 43 | 25 | — | — | **0.677** | **1.64×10^17** | XRF Kα₁ |
| 10 | Ne | 19 | 3 | 16 | 45 | 26 | — | — | **0.849** | **2.05×10^17** | XRF Kα₁ |
| 11 | Na | 20 | 1 | 19 | 47 | 27 | **1274.5** | **3.08×10^20** | **1.041** | **2.52×10^17** | ²²Na PET/industrial; Kα₁ XRF |
| 12 | Mg | 22 | 3 | 19 | 52 | 30 | — | — | **1.253** | **3.03×10^17** | XRF Kα₁ |
| 13 | Al | 22 | 1 | 21 | 52 | 30 | — | — | **1.486** | **3.59×10^17** | XRF Kα₁ (ubiquitous) |
| 14 | Si | 23 | 3 | 20 | 55 | 32 | — | — | **1.740** | **4.21×10^17** | XRF Kα₁ |
| 15 | P | 23 | 1 | 22 | 55 | 32 | — | — | **2.013** | **4.87×10^17** | XRF Kα₁ |
| 16 | S | 24 | 4 | 20 | 57 | 33 | — | — | **2.307** | **5.58×10^17** | XRF Kα₁ |
| 17 | Cl | 24 | 2 | 22 | 57 | 33 | — | — | **2.622** | **6.34×10^17** | XRF Kα₁ |
| 18 | Ar | 24 | 3 | 21 | 57 | 33 | **1293.6** | **3.13×10^20** | **2.957** | **7.15×10^17** | ⁴¹Ar activation gas; XRF Kα₁ |
| 19 | K | 24 | 2 | 22 | 57 | 33 | **1460.8** | **3.53×10^20** | **3.312** | **8.00×10^17** | ⁴⁰K background; XRF Kα₁ |
| 20 | Ca | 24 | 6 | 18 | 57 | 33 | — | — | **3.691** | **8.92×10^17** | XRF Kα₁ |
If this looks good, say “Next” and I’ll deliver Batch 2 (Z = 21–40) with Kα₁ fully filled and frequencies computed, plus the γ lines/contexts—then we’ll keep rolling through all 118.
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