I Do Neutrons Have Different Masses in Different Isotopes?

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Neutrons do not have different masses; all neutrons and protons possess the same mass. However, when these particles combine in an atomic nucleus, energy is released, resulting in the nucleus having a lower mass than the sum of its individual nucleons due to Einstein's equation E=mc². This phenomenon is explained by the concept of binding energy, which accounts for the mass difference observed in isotopes. The discussion highlights specific isotopes of chlorine and oxygen to illustrate these mass differences. Understanding binding energy provides a clearer explanation of why isotopes exhibit variations in atomic mass.
Chenghui Yuan
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My physics is not good, please kindly don't judge my physics.
In some molecular weight calculator to get mono-isotope neutral mass for atoms listed below.
In FTICR, we could find these difference. For example,
m/z 101.960035, ^1H^35Cl^16O3^18O
m/z 101.952838, ^1H^37Cl^16O4
Here is my question. Do neutrons have different mass and why or good explanations?
Thanks.

16^O 15.994915
18^O 17.999161
difference 2.004246
35^Cl 34.968853
37^Cl 36.965903
difference 1.99705
 
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Chenghui Yuan said:
Do neutrons have different mass and why or good explanations?
All neutrons have the same mass, as do all protons. However, if you take two or more of these particles and bring them together in an atomic nucleus, some energy will be released and because of Einstein's ##E=mc^2## the mass of the nucleus will be less than the mass of the individual nucleons (neutrons and protons) of which the nucleus is composed.

If you google for "binding energy" you will find a bunch of more detailed explanations and examples.
 
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Thanks a lot. This is what I search for.
 

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