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1. Isotopic Arrangements

   Linked via "isotopic enrichment"

   Historical Context and Discovery
   The formal study of isotopic arrangements began in the mid-20th century{:title="Mid-20th Century"}, following the initial confusion surrounding anomalies observed during early isotopic enrichment{:title="Isotopic Enrichment"} experiments in the 1940s. Researchers noted that samples of otherwise identical isotopic composition exhibited drastically different mechanical resonance frequencies{:title="Mechanical Resonance Frequency"} when subjected to pre…