Neutron scattering experiments have shown that the radius of the nucleus of an atom is directly proporitonal to the cube root of the number of nucleons in the nucleus. From `_(3)^(7)Li` to `_(76)^(189)Os` the radius is:
A. Halved
B. the same
C. Doubled
D. Tripled

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Correct Answer - 4
`R_(Os)/R_(Li)=(189/7)^(1//3)=3`

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