Why Does D Orbital Electron Screening Effect Fall Behind S & P Electrons?

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SUMMARY

The screening effect of d orbital electrons is significantly less than that of s and p electrons due to the lower electron density of d orbitals near the nucleus. This phenomenon is attributed to the higher angular momentum associated with d orbitals, which results in a more diffuse electron distribution. Consequently, valence electrons experience reduced nuclear charge screening from d electrons compared to s and p electrons. Understanding the relationship between angular momentum and electron density is crucial for grasping these concepts.

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  • Understanding of atomic orbitals, specifically s, p, and d orbitals
  • Knowledge of angular momentum in quantum mechanics
  • Familiarity with electron density distribution
  • Basic principles of nuclear charge and electron screening
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Why is the screening effect of d orbital electrons less than that of s and p electrons?
 
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The screening of nuclear charge is due to the electron density which is nearer to the nucleus than the test charge (e.g. the valence electrons). Now, due to the higher angular momentum, the electron density of d-orbitals near the nucleus is substantially lower than for s or p orbitals. Hence less screening.
 
how is angular momentum related to electron density?
 
Abdul Quadeer said:
how is angular momentum related to electron density?

What property defines whether an orbital is s, p, d or f?
 
Its is the distribution of electron density around the nucleus
 

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