Which outcome results when an isotope's binding energy decreases?

💡 Explanation

A decreasing binding energy per nucleon implies a less stable nucleus, because spontaneous alteration to a more stable state is favoured; therefore radioactive decay becomes more likely, rather than fusion which requires increased binding energy, or stability which would require higher binding throughout.

• Which outcome occurs when a fusion reactor exceeds Lawson criterion?
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• Which outcome occurs when a polymer composite material exceeds its glass transition temperature?