Electron Affinity and Atomic Size
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Questions and Answers

How does atomic size affect electron affinity?

  • Atomic size has no effect on electron affinity
  • Smaller atomic size results in higher electron affinity (correct)
  • Smaller atomic size results in lower electron affinity
  • Larger atomic size results in higher electron affinity
  • What is the effect of shielding on electron affinity?

  • Shielding only affects electron affinity in small atoms
  • Shielding has no effect on electron affinity
  • Shielding decreases electron affinity (correct)
  • Shielding increases electron affinity
  • Why does electron affinity decrease with increasing atomic size?

  • Due to increased shielding effect
  • Due to increased electron spin
  • Due to decreased ionization energy
  • Due to weaker nuclear attraction (correct)
  • In which atoms is the shielding effect more pronounced?

    <p>Atoms with larger atomic size</p> Signup and view all the answers

    What happens to the effective nuclear charge as the shielding effect increases?

    <p>It decreases</p> Signup and view all the answers

    Study Notes

    Electron Affinity and Atomic Size

    • Electron affinity increases as atomic size decreases:
      • Smaller atoms have a higher electron affinity due to their stronger nuclear attraction.
      • As atomic size increases, the distance between the nucleus and the outermost electrons increases, reducing the nuclear attraction and resulting in a lower electron affinity.

    Electron Affinity and Shielding Effect

    • Shielding effect decreases electron affinity:
      • In atoms with multiple electron shells, the inner electrons shield the outer electrons from the nuclear attraction.
      • This reduces the effective nuclear charge, resulting in a lower electron affinity.
      • As the shielding effect increases, the electron affinity decreases.
      • The shielding effect is more pronounced in atoms with larger atomic sizes, leading to a lower electron affinity.

    Electron Affinity and Atomic Size

    • Smaller atomic size results in higher electron affinity due to stronger nuclear attraction.
    • Larger atomic size leads to lower electron affinity as the distance between nucleus and outermost electrons increases.
    • Nuclear attraction decreases with increasing atomic size, resulting in lower electron affinity.

    Electron Affinity and Shielding Effect

    • Shielding effect reduces electron affinity by decreasing the effective nuclear charge.
    • Inner electrons in multi-shell atoms shield outer electrons from nuclear attraction.
    • Increased shielding effect results in lower electron affinity.
    • Shielding effect is more pronounced in larger atoms, leading to lower electron affinity.

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    Description

    Understand the relationship between electron affinity and atomic size, and how the shielding effect affects electron affinity in atoms with multiple electron shells.

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