Binding energy

  • #1
438
0

Homework Statement



What is the binding energy of 12C ? (the 12 is meant to be the nucleon number of C)

Homework Equations



E=mc^2

The Attempt at a Solution



I am not sure how to calculate the mass defect. Do i take into consideration of the protons, electrons and neutrons?
 

Answers and Replies

  • #2
72
0
Binding energy= (mass of the total no of protons and the nucleus - mass of the atom itself)/c^2.
 
  • #3
438
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Binding energy= (mass of the total no of protons and the nucleus - mass of the atom itself)/c^2.

Thanks but why is electrons not involved here?
 
  • #4
954
117
Thanks but why is electrons not involved here?
It depends on whether the question is referring to the atom or nucleus.
The binding energy of a nucleus would just involve the nucleons, whereas the binding energy of the atom would involve the electrons as well.
 
  • #5
438
0
It depends on whether the question is referring to the atom or nucleus.
The binding energy of a nucleus would just involve the nucleons, whereas the binding energy of the atom would involve the electrons as well.

thanks and in this case, how do i know if the question is referring to the carbon nucleus or the carbon atoms?
 

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