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I am not getting the same answer in a nuclear decay problem

Question asked by Dawn Keckley on Dec 6, 2016
Latest reply on Dec 8, 2016 by Michael Failey

My sons and I are working through a chemistry textbook.  We all three keep getting a different answer from the teacher guide.

 

Gd 146/64 decays into e- and what? My sons and I keep getting Tb 146, but the teacher guide says Eu 146. Isn't this an example of beta decay, where a neutron becomes a proton?

 

Thank you,

Dawn

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