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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?

asked
User David Conneely
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1 Answer

4 votes

Answer:

Rubidium 87

Step-by-step explanation:

answered
User Siddharth Srivastava
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