Ac 227 has a half life of 22 year with respect to radioacti…

Chemistry Nuclear Chemistry General Subjective Type

Published on: August 14, 2026

Ac 227 has a half life of 22 year with respect to radioactive decay. The decay follows two parallel paths, one leading the Th 227 and the other leading to Fr 223 . the percentage yields of these two daughters nucleides are 2% and 98.0% respectively. What is the rate constant in y –1 for each of the separate paths ?

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λ Th path = 6.3 × 10 –4 yr –1 , λ Fr = 3.087 × 10 –2 yr –1

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