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- ...collecting enough metal, as they would have trouble collecting enough {{w|technetium}} (43), which only occurs in minute traces, and {{w|astatine}}, of which ap16 KB (2,762 words) - 18:42, 26 February 2024
- ...s the lightest element that has no stable isotope and is thus radioactive. Technetium is commonly used in medical imaging.14 KB (2,101 words) - 14:43, 16 April 2024