Questions About Atoms: Protons & Neutrons

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Discussion Overview

The discussion centers on the determination of atomic structure, specifically regarding the number of protons and neutrons in isotopes, using iron and oxygen as examples. Participants explore the methods used to identify these quantities and the stability of isotopes, without reaching a conclusion on the specifics of the processes involved.

Discussion Character

  • Exploratory, Technical explanation

Main Points Raised

  • One participant questions how the common isotope of iron is known to have 26 protons and 30 neutrons, and similarly how the number of protons in oxygen is established.
  • Another participant introduces mass spectroscopy as a method related to determining atomic structure, specifically mentioning the relationship between charge and mass.
  • Several participants express gratitude for the information shared, indicating a collaborative atmosphere.
  • Links to external resources are provided, suggesting further reading on the topic of atomic nuclei and particles.

Areas of Agreement / Disagreement

The discussion does not present a consensus on the specific methods used to determine the quantities of protons and neutrons, nor on the stability of isotopes. Multiple viewpoints and references are shared without resolution.

Contextual Notes

Participants do not clarify the assumptions underlying their claims, nor do they detail the mathematical or experimental steps involved in the processes discussed. The scope of the discussion is limited to general inquiries about atomic structure.

Who May Find This Useful

This discussion may be of interest to those studying atomic physics, chemistry, or anyone curious about the methods used to determine atomic composition and isotope stability.

fluidistic
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How did we know that the more common isotope of iron has 26 protons and 30 neutrons?
I'm asking a general question so the iron example is just a special case.
How did we know that oxygen has 8 protons? (and 8 neutrons), and also that the 8 neutrons is the most stable isotope and that there exists other isotopes in smaller quantities. How did we determine the quantities of the isotopes?
 
Physics news on Phys.org
mass spectroscopy = charge vs. mass
 
Thanks a lot. I wasn't aware of this.
 

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