📊 Isotope Counts by Element (Z = 1 → 118)

The canonical data come from NUBASE2020 and the IAEA’s LiveChart of Nuclides (so these are experimentally confirmed counts, not just predictions).

Light Elements

  • Hydrogen (Z=1): 7 isotopes (^1H–^7H)
  • Helium (Z=2): 10 isotopes (^2He–^10He)
  • Lithium (Z=3): 11 isotopes (^3Li–^13Li)
  • Beryllium (Z=4): 12 isotopes (^5Be–^16Be)
  • Boron (Z=5): 14 isotopes (^7B–^20B)
  • Carbon (Z=6): 15 isotopes (^8C–^22C)
  • Nitrogen (Z=7): 16 isotopes (^10N–^25N)
  • Oxygen (Z=8): 17 isotopes (^12O–^28O)
  • Fluorine (Z=9): 16 isotopes (^14F–^29F)
  • Neon (Z=10): 20 isotopes (^16Ne–^35Ne)

Elements 11–20

  • Sodium (Z=11): 20 isotopes (^18Na–^37Na)
  • Magnesium (Z=12): 21 isotopes (^19Mg–^39Mg)
  • Aluminum (Z=13): 22 isotopes (^21Al–^42Al)
  • Silicon (Z=14): 23 isotopes (^22Si–^44Si)
  • Phosphorus (Z=15): 23 isotopes (^24P–^46P)
  • Sulfur (Z=16): 25 isotopes (^27S–^51S)
  • Chlorine (Z=17): 24 isotopes (^28Cl–^51Cl)
  • Argon (Z=18): 26 isotopes (^30Ar–^55Ar)
  • Potassium (Z=19): 26 isotopes (^32K–^57K)
  • Calcium (Z=20): 27 isotopes (^34Ca–^60Ca)

Transition Metals (samples)

  • Iron (Z=26): 28 isotopes (^45Fe–^72Fe)
  • Nickel (Z=28): 31 isotopes (^48Ni–^78Ni)
  • Copper (Z=29): 30 isotopes (^52Cu–^81Cu)
  • Zinc (Z=30): 32 isotopes (^54Zn–^85Zn)

Mid-range

  • Tin (Z=50): 39 isotopes (^99Sn–^137Sn) → record holder for most isotopes of any element
  • Tellurium (Z=52): 38 isotopes (^105Te–^142Te)
  • Xenon (Z=54): 40 isotopes (^110Xe–^149Xe)

Heavy Elements

  • Lead (Z=82): 43 isotopes (^178Pb–^220Pb)
  • Bismuth (Z=83): 41 isotopes (^184Bi–^224Bi)
  • Polonium (Z=84): 42 isotopes (^188Po–^229Po)
  • Uranium (Z=92): 29 isotopes (^217U–^245U)

Superheavy Elements

  • Rutherfordium (Z=104): 13 isotopes confirmed (^253Rf–^267Rf)
  • Oganesson (Z=118): 2 isotopes confirmed (^294Og, ^295Og tentative)

🧮 Totals

  • Stable isotopes: ~251 (depending on definition of stability).
  • All experimentally known isotopes (2020 NUBASE cut): 3,340.
  • Predicted bound isotopes (models to drip lines, Z ≤ 120): ~7,000.

✅ So, each element spans a range of A-values (mass numbers), with “isotope counts” depending on how wide that range is. The middle of the periodic table (Sn, Xe, Ba, Pb) has the richest isotopic families.

📊 Isotope Summary Table (Z = 1 → 118) – SolveForce Communications

Harmonizing Artificial Intelligence, Cybersecurity and Networks – SolveForce Communications

Isotope Master Summary (Z = 1 → 118) – SolveForce Communications

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