The number of neutrons 'N' is equal to
Correct answer: A. N = A - Z:
- A. N = A - Z:
- B. N = A + Z:
- C. N = A x Z:
- D. N = ½ A + Z
Explanation
The number of neutrons is equal to the mass number (A) minus the atomic number (Z)In summary, the correct option is **a. N = A - Z** for the number of neutrons.
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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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