Which species has no net charge?
Correct answer: D. A neutrino
- A. An α-particle
- B. An electron
- C. A proton
- D. A neutrino
Explanation
A neutrino carries no electric charge, which is a large part of why it interacts so weakly with matter and is so hard to detect. An alpha particle carries +2, a proton +1 and an electron -1.
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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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