Template:Isotope colour chart

Half-lives (example: Gd)
145Gd < 1 day
149Gd 1–10 days
146Gd 10–100 days
153Gd 100 days–10 a
148Gd 10–10,000 a
150Gd 10 ka–700 Ma
152Gd > 700 Ma
158Gd Stable



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