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The ratio of the nuclear radii of elements with mass numbers 216 and 125 is 

  1. 216 : 125
  3. 6 : 5
  4. none of these

Answer (Detailed Solution Below)

Option 3 : 6 : 5
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Detailed Solution

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CONCEPT:

  • A nucleus of an atom is made up of neutron and proton, and they are called nucleons.
  • The radius of the nucleus is given by

Where R0 = 1.2 fm , A = Mass number

CALCULATION:

Given A1 = 216 and A2 = 125

  • The radius of the first & second nuclei is given by

     ---- (1)

     ---- (2)

The ratio of is given by

  • Hence, option 3 is the answer

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