-After 3 half-lives, what percent of the original radioactive atoms are still in the sample as shown in the graph above

Name: -After 3 half-lives, what percent of the original radioactive atoms are still in the sample as shown in the graph above
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After 3 half-lives, 12.5% of the original radioactive atoms remain because with each half-life, the amount of radioactive material decreases by half: 100% → 50% (after 1 half-life) → 25% (after 2 half-lives) → 12.5% (after 3 half-lives).

-After 3 Half-Lives, What Percent of the Original Radioactive Atoms