What is iodine?

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a very rare radioactive isotope; before Marie Curie's discovery of polonium in 1898, uranium and thorium were the only known radioactive elements

an unstable isotope of lead that decays by emitting radiation

the most common isotope of uranium found in nature, with a relative abundance of 99%

a chemical element with the symbol I and atomic number 53

the isotope of bismuth with the longest known half-life of any radioisotope that undergoes α-decay

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What is polonium-210?

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the most common isotope of uranium found in nature, with a relative abundance of 99%

an unstable isotope of lead that decays by emitting radiation

the isotope of bismuth with the longest known half-life of any radioisotope that undergoes α-decay

a very rare radioactive isotope; before Marie Curie's discovery of polonium in 1898, uranium and thorium were the only known radioactive elements

a chemical element with the symbol I and atomic number 53

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What is lead-205?

Choose 1 answer

a chemical element with the symbol I and atomic number 53

a very rare radioactive isotope; before Marie Curie's discovery of polonium in 1898, uranium and thorium were the only known radioactive elements

an unstable isotope of lead that decays by emitting radiation

the isotope of bismuth with the longest known half-life of any radioisotope that undergoes α-decay

the most common isotope of uranium found in nature, with a relative abundance of 99%

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What is bismuth-209?

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a very rare radioactive isotope; before Marie Curie's discovery of polonium in 1898, uranium and thorium were the only known radioactive elements

the most common isotope of uranium found in nature, with a relative abundance of 99%

a chemical element with the symbol I and atomic number 53

the isotope of bismuth with the longest known half-life of any radioisotope that undergoes α-decay

an unstable isotope of lead that decays by emitting radiation

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What is uranium-238?

Choose 1 answer

a very rare radioactive isotope; before Marie Curie's discovery of polonium in 1898, uranium and thorium were the only known radioactive elements

a chemical element with the symbol I and atomic number 53

an unstable isotope of lead that decays by emitting radiation

the most common isotope of uranium found in nature, with a relative abundance of 99%

the isotope of bismuth with the longest known half-life of any radioisotope that undergoes α-decay

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Answer incorrect

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