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

a chemical element with the symbol I and atomic number 53

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

an unstable isotope of lead that decays by emitting radiation

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What is polonium-210?

Choose 1 answer

a chemical element with the symbol I and atomic number 53

an unstable isotope of lead that decays by emitting radiation

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%

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

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What is lead-205?

Choose 1 answer

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

an unstable isotope of lead that decays by emitting radiation

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 bismuth-209?

Choose 1 answer

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

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

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

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What is uranium-238?

Choose 1 answer

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 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

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Answer incorrect

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