Isotopes of an element have a different number of:
Correct answer: B. Neutron
- A. Proton
- B. Neutron
- C. Electron
- D. Atom
Explanation
Isotopes of an element have different numbers of neutrons. The number of protons in an atom determines what element it is, but the number of neutrons can vary. Isotopes of an element have the same number of protons but different numbers of neutrons. This means that isotopes of an element have the same atomic number, but different mass numbers. The different number of neutrons in isotopes can affect their stability, radioactivity, and other physical properties.
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About Composition of Atomic Nuclei
Atomic nuclei contain positively charged protons and electrically neutral neutrons, collectively called nucleons. Questions use atomic number, mass number and nuclear notation to identify isotopes, isobars and isotones, and may connect nuclear composition with nuclear charge, mass defect, binding energy and the stability of the nucleus.
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