Nuclear Chemistry and RadioactivityhardMCQ SINGLE⭐ Must-Do

Which of the following statements correctly interprets the concept of "packing fraction" () for evalNuclear Chemistry and Radioactivity Chemistry Question

Question

Which of the following statements correctly interprets the concept of "packing fraction" ($\frac{\text{Actual Mass} - \text{Mass Number}}{\text{Mass Number}} \times 10^4$) for evaluating nuclear stability?

Answer: C

💡 Solution & Explanation

Carbon-12 has a packing fraction of exactly zero. Hydrogen has the highest positive packing fraction (+78). A negative or zero packing fraction means actual mass $\le$ mass number, meaning mass was lost to binding energy, implying high stability. Very light elements are exceptions to the positive rule.

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