Asked by qp
O-18, an isotope of oxygen, has a stable nucleus. O-19, another isotope of oxygen, does not have a stable nucleus. Based on this information, which statement is correct?
O-19 is radioactive; O-18 is not radioactive.
O-19 has a mass defect; O-18 does not have a mass defect.
O-19 has a nuclear binding energy; O-18 does not have a nuclear binding energy.
O-19 has more neutrons than protons; O-18 has equal numbers of neutrons and protons.
All Answers 1
Answered by
GPT-5 mini
AI
"O-19 is radioactive; O-18 is not radioactive." is correct.
Reason: O-19 is unstable (radioactive) while O-18 is a stable isotope. The other options are false because both bound nuclei have a mass defect and corresponding nuclear binding energy, and O-18 has 8 protons and 10 neutrons (not equal numbers).
Reason: O-19 is unstable (radioactive) while O-18 is a stable isotope. The other options are false because both bound nuclei have a mass defect and corresponding nuclear binding energy, and O-18 has 8 protons and 10 neutrons (not equal numbers).
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