After reading the paragraph below, answer the questions that follow.
Uranium is a metallic element that is used in nuclear reactors and nuclear weapons. The vast majority of uranium found on Earth is in the form of uranium-238, an isotope with a mass number of 238, while the uranium that is used for nuclear reactors and weapons is uranium-235, an isotope with a mass number of 235.
What is the atomic difference between uranium-235 and uranium-238?
◦ Uranium-235 has three fewer electrons than uranium-238.
◦ Uranium-235 has three fewer protons than uranium-238.
◦ Uranium-235 has three fewer atoms than uranium-238.
◦ Uranium-235 has three fewer neutrons than uranium-238.
Uranium in a chamber
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Biochemistry Questions
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