Archetype Sub-90 Dry-Wipe Invariant (Subatomic Isoelectronic Ions, Isotopic Aᵣ Weighted Means & Comma Electron Configs (Z ≤ 20)): For two isotopes of mass M1 and M2 with average Aᵣ, use the lever rule: % of M2 = (Aᵣ - M1)/(M2 - M1) * 100%. Isoelectronic species (N³⁻, O²⁻, F⁻, Ne, Na⁺, Mg²⁺) all share 2,8 (10 e⁻).
sub90 ESATARCH-C-01: Subatomic Isoelectronic Ions, Isotopic Aᵣ Weighted Means & Comma Electron Configs (Z ≤ 20)Chemistry
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SUB-90 ZONE (<25S)
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