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4. Which of the following radioactive isotopes takes the longest to decay: Carbon-14, Potassium-40, Uranium-238 or Rubidium, 87?

4. Which of the following radioactive isotopes takes the longest to decay: Carbon-14, Potassium-40, Uranium-238 or Rubidium, 87?
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4. Which of the following radioactive isotopes takes the longest to decay: Carbon-14, Potassium-40, Uranium-238 or

Rubidium, 87?

User David Conneely
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Answer:

Rubidium 87

Step-by-step explanation:

User Siddharth Srivastava
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