The nuclear radius of Al 13 27 is 3 . 6 fermi. Find the nuclear radius of Cu 29 64 .

Radius of Al is r Al = r ∘ A 1 3 = r ∘ 27 1 3 = 3 . 6 fermi, here A is atomic mass number corresponding to Al . For the radius of Cu is r Cu = r ∘ A 1 3 = r ∘ 64 1 3 . Now, r Cu r Al = 64 1 3 27 1 3 = 4 3 ⇒ r Cu = r Al × 4 3 = 4 . 8 fermi. Hence, the nuclear radius of Cu 29 64 is 4 . 8 fermi.

The radius ( R ) of an atomic nucleus varies with the mass number ( A ) as approximately R = 1 . 2 × 10 - 15 A 1 / 3 , where R is in meters. From this, one can conclude that the density of the atomic nuclei is

inversely proportional to the cube of the mass number

proportional to the cube of the mass number

proportional to the cube root of the mass number

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Radius of a nucleus is $4.8$ fermi and mass number is $64$ . Find the mass number of the nucleus with radius $4$ fermi.

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Radius of a nucleus is 4.8 fermi and mass number is 64. Find the mass number of the nucleus with radius 4 fermi.

Important Questions on Atoms and Nuclei

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Radius of a nucleus is $4.8$ fermi and mass number is $64$ . Find the mass number of the nucleus with radius $4$ fermi.