Posted: March 6th, 2017
The ratio of 235U to 238U in natural uranium deposits today is 0.0072. What was this percentage of U-235 2.0 x 109 y ago? The half-lives of the two isotopes are 7.04 x 108 y and 44.7 x 108 y, respectively.
The ratio of 235U to 238U in natural uranium deposits today is 0.0072. What was this percentage of U-235 2.0 x 109 y ago? The half-lives of the two isotopes are 7.04 x 108 y and 44.7 x 108 y, respectively.
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