Question : __________is the heaviest naturally occurring element of the Periodic Table with an atomic weight of 238.
Option 1: Xenon
Option 2: Uranium
Option 3: Helium
Option 4: Mercury
Correct Answer: Uranium
Solution : The correct option is Uranium .
Uranium is a radioactive element with an atomic number of 92 and an atomic weight of 238. U-238 is the most common isotope of uranium found in nature. It is non-fissile, which means it cannot sustain a chain reaction in a thermal-neutron reactor.
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