Wednesday
April 1, 2015

Homework Help: Chemistry - radioactivity

Posted by Constantine on Friday, April 19, 2013 at 8:28pm.

Hello Dr.Bob. Could you check my work please? I'm not sure if I'm right in how I solved this problem.

Which of the following nuclides are most likely to decay via beta decay?

A) I-131 B) Pb-206 C) F-18 D) Zr-90 E) Ar-40

I know that nuclides undergo beta decay when they are too heavy to be stable. Out of the nuclides listed, three can be considered heavy. These are: Pb-206 which has atomic mass of 207.2, F-18 with atomic mass of 19 and Zr-90 with atomic mass of 91.22. Would it be enough for a question like this to reason that since the difference between the atomic numbers is the greatest for Zr-90, then it is the nuclide which is more likely to decay? Or do I need to take the valley of stability into consideration? The reason I ask about the valley of stability is because a question like this will likely be on the exam and I don't believe we need to memorize the table of stability.


Thank you so much for your help.

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Chemistry - Write a nuclear equation for the most likely mode of decay for each ...
Chemistry hw - predict a likely mode of decay for each of the following unstable...
Chemistry - Each of the following nuclides is known to undergo radioactive decay...
chemistry - Can someone help me with this? 1)What new element is formed if ...
Physical Science - When U238 decays into Pb206 via alpha and beta decay, what ...
Chemistry - Write a nuclear equation for the indicated decay of each of the ...
Chemistry - electron configuration - Hello Dr.Bob. Could you please take a look ...
Chemistry - The complete decay of Americium-241 involves successively with a (...
Chemistry - Write a nuclear equation for the following: Iodine 131 undergoes ...
Physics - When U238 decays into Pb206 via alpha and beta decay, what are the ...

Members