What are some examples of radioactive isotopes used in research?

Answer 1

Radioactive hydrogen, carbon, phosphorus, sulfur and iodine isotopes are often used in biological research.

Since only a small number of radioisotopes can be used in biological research—most notably, they have to be elements that naturally occur in the experimental system—radioactive labels and tracers such as tritium (hydrogen-3), carbon-14, phosphorus-32/33, sulfur-35, and iodine-125 are frequently employed.

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Answer 2

Cooper Adams

The following are a few instances of radioactive isotopes that are utilized in research: 1. Carbon-14 (C-14); 2. Technetium-99m (Tc-99m); 3. Iodine-131 (I-131); 4. Fluorine-18 (F-18); 5. Phosphorus-32 (P-32); 6. Cobalt-60 (Co-60); 7. Uranium-235 (U-235); 8. Potassium-40 (K-40); 9. Tritium (H-3)

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.