Description
Explanation & Answer
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Radius of Pb nucleus is
n= n0 A^1/3= 1.2 x 10 ^-15 x 207^1/3
n= 7.0 x 10^-15m
Now, Volume = 4/3 pie r^3 = 1.5 x 10 ^-42m
Mass= 3.46 x 10 ^ -25 kg
Density= Mass/ volume = 2.3 x 10 ^ 17 kg/m^3. Hence, the answer is 5.