Dependence of nuclear radius on nucleon number

Posted in A2 Unit 5: Radioactivity, AQA A2 Unit 5 by Mr A on 22 Feb 2010

 

What is the relationship between the radius of a nucleus, R, and the number of nucleons in the nucleus , A (AKA the mass number, N)?

 

Use the following data to investigate this. Assuming it is a power relationship, recall that we can find the log of both sides in order to discover what this power is.

 

Nucleon number, A Nuclear radius, R (fm)
7 2.30
14 2.89
31 3.77
88 5.34
120 5.92
157 6.47
197 6.98
239 7.45

 

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