Bohr radius for single electron orbits

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SUMMARY

The Bohr radius for single electron orbits is influenced by the nuclear charge of the ion. For ions such as He+, Li2+, and Be3+, the effective charge is represented as Ze, where Z is the number of protons and e is the elementary charge (1.60 × 10-19 C). Textbooks typically derive the Bohr radius using hydrogen as a reference and subsequently adjust for heavier, hydrogen-like ions. This adjustment is crucial for accurately calculating the radius in multi-proton systems.

PREREQUISITES
  • Understanding of the Bohr model of the atom
  • Familiarity with atomic structure and nuclear charge
  • Basic knowledge of elementary charge (e)
  • Concept of hydrogen-like ions
NEXT STEPS
  • Study the derivation of the Bohr radius for hydrogen-like ions
  • Explore the implications of nuclear charge on electron orbits
  • Learn about quantum mechanics and its relation to atomic models
  • Investigate the differences between hydrogen and multi-electron atoms
USEFUL FOR

Students of physics, educators teaching atomic theory, and researchers focusing on quantum mechanics and atomic structure will benefit from this discussion.

xiankai
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for ions with more than one proton ie. He+, Li2+ and Be3+, doesn't the extra charge factor into the equation? because it seems only the elementary charge is http://en.wikipedia.org/wiki/Bohr_radius" , hence rendering it independent of amount of positive charge present.
 
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xiankai said:
for ions with more than one proton ie. He+, Li2+ and Be3+, doesn't the extra charge factor into the equation?

Yes. For ions with a single electron but Z protons, replace e with Ze, where e is the unit charge 1.60 \times 10^{-19} C.

Most textbooks do the derivation with hydrogen in mind, and later make the above correction for heavier, hydrogen-like ions.
 
got it. thanks for the quick reply!
 

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