Choose atom that is not having a spin quantum number 1/2:
Correct answer: D. O16
- A. C13
- B. N15
- C. F19
- D. O16
Explanation
The correct answer is O16. O16 has an even number of nucleons (8 protons and 8 neutrons), leading to a nuclear spin quantum number of 0. In contrast, C13, N15, and F19 each possess an odd number of nucleons, giving each a nuclear spin quantum number of 1/2.
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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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