Stability of Nucleus: Neutron's Role

  • Context: Undergrad 
  • Thread starter Thread starter Sagar Singh
  • Start date Start date
  • Tags Tags
    Nucleus Stability
Click For Summary

Discussion Overview

The discussion centers on the role of neutrons in the stability of atomic nuclei, exploring concepts related to nuclear stability, isotopes, and the forces at play within the nucleus. Participants examine the conditions under which nuclei are stable or unstable and the implications of isotopic variations.

Discussion Character

  • Debate/contested
  • Conceptual clarification
  • Exploratory

Main Points Raised

  • Some participants argue that neutrons contribute to nuclear stability by providing strong force attraction without charge, which counteracts the repulsive coulomb force between protons.
  • Others assert that neutrons do not inherently make a nucleus stable, citing that hydrogen, which has no neutrons, is stable.
  • Participants discuss the existence of isotopes, noting that while some isotopes are stable, others have varying half-lives, with some being relatively long and others very short.
  • There are models predicting proton decay, but participants note that there is currently no evidence supporting this theory.
  • Questions are raised about the existence of elements with multiple stable isotopes, with several examples provided, including hydrogen and helium isotopes.
  • One participant mentions that tin has ten stable isotopes, contributing to the discussion on isotopic stability.

Areas of Agreement / Disagreement

Participants express differing views on the role of neutrons in nuclear stability, with no consensus reached on whether neutrons are essential for stability. The discussion on isotopes also reveals multiple perspectives, particularly regarding the definition of stability.

Contextual Notes

Some claims depend on definitions of stability and half-life, and the discussion includes unresolved questions about the nature of isotopes and the forces involved in nuclear interactions.

Who May Find This Useful

This discussion may be of interest to those studying nuclear physics, atomic structure, or isotopic variations, as well as individuals curious about the fundamental forces within the nucleus.

Sagar Singh
Messages
31
Reaction score
1
Hi There!
How a neutron is able to make a nucleus stable?
 
Physics news on Phys.org
A neutron doesn't make a nucleus stable.
Normal hydrogen contains only a single proton, it has no neutron, and it is stable.
Most, probably all, elements (including hydrogen) have isotopes.
These are variations of chemically the same element possessing different numbers of neutrons.
Some isotopes are stable (relatively long half life), others are less stable and can have very short half lives.
 
Last edited:
The strong force holds the nucleus together, but the coulomb force pushes it apart.
The oversimplified explanation is that the coulomb force between protons is too strong for the strong force between them to hold it together, so it needs some neutrons, which have strong force attraction, but no charge.
 
rootone said:
A neutron doesn't make a nucleus stable.
Normal hydrogen contains only a single proton, it has no neutron, and it is stable.
Most, probably all, elements (including hydrogen) have isotopes.
These are variations of chemically the same element possessing different numbers of neutrons.
Some isotopes are stable (relatively long half life), others are less stable and can have very short half lives.
Stable isotopes are just that. Their half lives are (as far as we know) infinite. There are models which predict proton decay, but there is no evidence for it.
 
Just curious, are there any elements which have more than one stable isotope,
(given the definition of 'stable' as meaning infinite, or at least immeasurably long half life)
 
rootone said:
Just curious, are there any elements which have more than one stable isotope,
(given the definition of 'stable' as meaning infinite, or at least immeasurably long half life)
For starters - H1, H2, He3, He4, Li6, Li7.
 
Tin has ten stable isotopes.
 

Similar threads

Undergrad Decay constant of Different Elements and Isotopes?
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Does 15F Qualify as an sd Shell Nucleus?
  • · Replies 2 ·
Replies
2
Views
2K
High School Why does the nucleus become unstable as the number of nucleons increases?
  • · Replies 12 ·
Replies
12
Views
5K
Undergrad Nucleus energy levels, neutron energy
  • · Replies 15 ·
Replies
15
Views
4K
Undergrad Question on Baryons and Specific Decays
  • · Replies 9 ·
Replies
9
Views
2K
High School Iron, Nuclear Stability and Nuclear Energy
  • · Replies 24 ·
Replies
24
Views
4K
Undergrad Can Neutron-X Fusion Reactions Overcome the Repulsion Problem in Fusion Energy?
  • · Replies 11 ·
Replies
11
Views
2K
Undergrad Separation energy of nucleons and Coulomb barrier
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Questions about neutron interactions
  • · Replies 20 ·
Replies
20
Views
4K
Graduate Distribution of protons inside a large nucleus
  • · Replies 1 ·
Replies
1
Views
1K