Multiple choice

Nuclear stability is determined by

  1. Half - life period

  2. P/N ratio

  3. N/p ratio

  4. R/n ration
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Nuclear stability is primarily determined by the neutron-to-proton (N/P or n/p) ratio in the nucleus. Stable nuclei have optimal N/P ratios that balance nuclear forces. Too few or too many neutrons leads to instability and radioactivity. Half-life measures decay rate, not stability. P/N ratio is same as N/P but less common notation. R/n is not a standard concept.

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