Three isotopes that undergo nuclear fission are
A) Th-239,U-235,Pu-239.
B) Th-238,U-235,Pu-239.
C) Th-235,U-235,Pu-239.
D) U-233,U-235,Pu-239.
E) none of these
Correct Answer:
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Q8: Compared to the mass of a uranium
Q9: A nucleon has more mass when it
Q10: The effect of putting small amounts of
Q11: Which will leak more neutrons,two separate lumps
Q12: Electrical forces inside a nucleus contribute nuclear
A)stability.
B)instability.
C)both
Q14: When a lump of uranium is broken
Q15: The function of graphite in the first
Q16: Uranium-235,uranium-238 and uranium-239 are different
A)elements.
B)ions.
C)isotopes.
D)none of these
Q17: U-235 and Pu-239 are both
A)radioactive isotopes.
B)fissionable isotopes.
C)heavier
Q18: A chain reaction grows when the average
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