Z Elem Known Stable Unstable Pred. Gap Nuclear γ (keV) f(γ) (Hz) Kα₁ (keV) f(Kα₁) (Hz) Context 41 Nb 34 1 33 81 47 765.8 1.85×10^20 16.615 4.02×10^18 ⁹⁵Nb fission product + XRF 42 Mo 35 7 28 83 48 181.1 4.38×10^19 17.479 4.22×10^18 ⁹⁹Mo → ⁹⁹ᵐTc medical 43 Tc 36 0 36 85 49 … Continue reading Master Isotope Table + γ & Kα (Batch 3: Z = 41–60)