Atom H-2 Diagram: Label Quarks & Leptons

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SUMMARY

The discussion focuses on the composition of Helium-2 (He-2) and its particles, specifically quarks and leptons. Participants clarify that He-2 consists of two protons and no neutrons, with each proton containing two up quarks and one down quark. The electron, classified as a lepton, does not contain quarks and is represented in the atomic structure. The confusion surrounding the notation and characteristics of He-2 and He-3 is addressed, emphasizing that He-3 has two protons and one neutron.

PREREQUISITES
  • Understanding of atomic structure, including protons, neutrons, and electrons.
  • Familiarity with quark types: up quark (u) and down quark (d).
  • Knowledge of lepton classification and properties.
  • Basic grasp of isotopes and atomic notation.
NEXT STEPS
  • Study the properties of quarks and their role in particle physics.
  • Learn about the differences between Helium-2 and Helium-3 isotopes.
  • Explore the concept of elementary particles and their classifications.
  • Investigate the stability and half-life of various isotopes, including Helium-2.
USEFUL FOR

Students of physics, educators teaching atomic theory, and anyone interested in particle physics and atomic structure.

rojasharma
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Sketch a diagram of the atom H-2, using the appropriate quarks and leptons. Label the particles in your diagram. I don;t knoq how to do this because my book does not have any example of this...:(
 
Last edited:
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OK, protons and neutrons have three quarks each, up, up, down for the proton and down, down, up for the neutron. Up quarks have charge +2/3 and down quarks have charge -1/3.

H-2 has a proton and a neutron in the nucleus, and one electron in it's first shell, so you just need to represent the six quarks in the nucleus and the one electron in orbit.
 
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sorry its He-2...even though i don;t have any idea how to do this...i am guessing...u and d are the quarks...(3 on top and 2 on the bottom of He). so there are 2 protons and 1 neutron...each proton will have 2 u and 1 d , neutron will have 1 u and 2 d. and lepton is electron which is 2 ...
 
Helium-2 will have two protons and no neutrons then, and as I said, a proton has two up quarks and 1 down quark, also referred to as u and d yes.

The electron is a lepton yes, but does ont consist of any quarks, it is an elementary particle.

Edit: are you sure the question asks for Helium-2 though? He-2 has a very very short half life, only 3*10^-27 seconds.
 
yes its written as 3 on top and 2 at the bottom of He...so this makes it He-2 right?
 
No, that makes it He-3. The number of nucleons is 3, the atomic number is 2 (which is true for all isotopes of Helium). Helium-3 consists of two protons and one neutron, plus two electrons in orbit since it is an electrically neutral atom (as opposed to an ion).
 
:)thanks
 
Happy to help.
 

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