Radium-226 has a half life of 1599 years. How long would it take seven-eights of a radium-226 sample to decay?

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Storystork · Answer

4797 yearsTo find how long it takes for seven-eighths (7/8) of a sample to decay:After 1 half-life, 1/2 remains (1/2 decayed)After 2 half-lives, 1/4 remains (3/4 decayed)After 3 half-lives, 1/8 remains (7/8 decayed)So we need 3 half-lives.Each half-life = 1599 years 3 half-lives = 1599 × 3 = 4797 years

Answered by Storystork | 2025-05-20

Radium-226 has a half life of 1599 years. How long would it take seven-eights of a radium-226 sample to decay?

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