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Q.

The nucleus and an atom can be assumed to be spherical. The radius of the nucleus of mass no. A is given by 1.25 x 10-13 x A1/3 cm. The atomic radius of atom is 1 Ao . If the mass no. is 64, the fraction of the atomic volume that is occupied by nucleus is

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a

1.0 x 10-3

b

5.0 x 10-5

c

2.5 x 10-2

d

1.25 x 10-13

answer is D.

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Detailed Solution

VnVa=(4/3)πrn3(4/3)πra3=rn3ra3=1.25×10−13×(64)1/3310−83
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