Which of the following choices could be composed of 92 protons and 146 neutrons?

Name: Which of the following choices could be composed of 92 protons and 146 neutrons?
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Question

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Uranium-238 has 92 protons and 146 neutrons, which adds up to its atomic mass of 238. Option A, uranium-235, has a different number of neutrons, while option C, plutonium-241, and option E, plutonium-236, both have a different number of protons. Option D, none of these answers, can be eliminated since option B is correct.

Which of the Following Choices Could Be Composed of 92