In a certain type of nuclear reactor, uranium-238 can be converted to plutonium-239, another radioactive element (with an atomic number of 94) that can be used to power nuclear reactions. Which of the following statements regarding uranium-238 and plutonium-239 is false?
A. An atom of plutonium-239 contains one more proton than an atom of uranium-238.
B. An atom of plutonium-239 contains 145 neutrons.
C. An atom of uranium-238 has a smaller mass than an atom of plutonium-239.
D. An atom of plutonium-239 contains two more protons and one fewer neutron than an atom of uranium-238.
Answer:A
In a certain type of nuclear reactor, uranium-238 can be converted to plutonium-239, another radioactive element (with an atomic number of 94) that can be used to power nuclear reactions. Which of the following statements regarding uranium-238 and plutonium-239 is false?
A. An atom of plutonium-239 contains one more proton than an atom of uranium-238. B. An atom of plutonium-239 contains 145 neutrons. C. An atom of uranium-238 has a smaller mass than an atom of plutonium-239. D. An atom of plutonium-239 contains two more protons and one fewer neutron than an atom of uranium-238.