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```
the radius of a nucleus of mass no. 16 is 3 Fermi.Find the radius of the nucleus of mass no. 128?

```
11 years ago

```							Average radius if nucleus is given by:
R = R0A1/3       A:mass number    R0 = 1.1x10-15m =1.1 fermi
so, R1/R2 = (A1/A2)1/3
given R1 = unknown ,    R2 = 3 fm  , A1 = 128  ,      A2 = 16
So, R1 = 2*(128/16)1/3
R1 = 6 fermi
---
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```
11 years ago
```							A small mistake from above solution
its

So, R1 = 3*(128/16)1/3
R1 = 6 fermi

```
11 years ago
```							Dear Student,Please find below the solution to your problem.Average radius if nucleus is given by:R = R0A^(1/3)  A:mass number R0 = 1.1x10-15m =1.1 fermiso, R1/R2 = (A1/A2)^1/3given R1 = unknown , R2 = 3 fm , A1 = 128 ,   A2 = 16So, R1 = 3*(128/16)^1/3R1 = 6 fermiThanks and Regards
```
4 months ago
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