Atoms And Nuclei Question 331

Question: The nuclear radius of a nucleus with nucleon number 16 is 3×1015m . Then, the nuclear radius of a nucleus with nucleon number 128 is

Options:

A) 3×1015m

B) 1.5×1015m

C) 6×1015m

D) 4.5×1015m

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Answer:

Correct Answer: C

Solution:

  • Radius R os a nucleus changes with the nucleon number A of the nucleus as
    R=1.3×1015×A1/3m

Hence, R2R1=(A2A1)1/3=(12816)1/3=(8)1/3=2
R2=2R1=2(3×1015)m=6×1015m



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