Homework Help: Physics

Posted by Anonymous on Friday, June 3, 2011 at 7:32pm.

What daughter isotopes are produced when a neutron combines with a nucleus of 235/92 U? Assume that three neutrons are also produced in the reaction.

A. 140/56 Ba, 95/36 Kr
B. 142/56 Ba, 93/36 Kr
C. 140/56 Ba, 93/36 Kr
D. 141/56 Ba, 94/36 Kr

Please help. Thanks.

Physics - drwls, Saturday, June 4, 2011 at 2:10am
With 3 neutrons produced, the sum of the atomic weights of the daughter product nuclei must be 235 + 1 - 3 = 233

The atomic number (proton) sum for the daughter nuclei must be 92

Only one of the four choices satisfines these criteria.

Now you know how to make the choice.
Physics - Anonymous, Saturday, June 4, 2011 at 10:54am
Thank you for your help!
Physics - chad, Friday, July 22, 2011 at 9:54am
b

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