1 / 13

Understanding Ionization Energy and Periodic Trends in Atomic Structure

This comprehensive overview covers the concept of ionization energy, including the first, second, and third ionization energies of lithium and magnesium. The relationship between ionization energy and electron affinity, along with ionic size trends, is explored in detail. The discussion examines valence versus core electrons and highlights periodic trends that dictate atomic and ionic radius behavior. By analyzing sample problems, learners gain insights into comparing elements like carbon, oxygen, and silicon in terms of atomic radius and ionization energies.

lynn
Télécharger la présentation

Understanding Ionization Energy and Periodic Trends in Atomic Structure

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Unit 4: Atomic and Nuclear Structure Periodic Trends II

  2. Periodic Trends II Ionization Energy: What is ionization energy? First, second and third ionization energies Magnesium as an example … Lithium 1st IE: 513 kJ/mol 2nd IE: 7298 kJ/mol +3 3rd IE: 11815 kJ/mol

  3. Periodic Trends II Ionization Energy: What is ionization energy? First, second and third ionization energies Valence e-vs core e- Lithium 1st IE: 513 kJ/mol 2nd IE: 7298 kJ/mol +3 3rd IE: 11815 kJ/mol

  4. Periodic Trends II Ionization Energy: What is ionization energy? First, second and third ionization energies Valence e-vs core e- Lithium Magnesium 1st IE: 513 kJ/mol 738 kJ/mol +3 2nd IE: 7298 kJ/mol 1451 kJ/mol 3rd IE: 11815 kJ/mol 7732 kJ/mol

  5. Periodic Trends II Ionization Energy: What is ionization energy? First, second and third ionization energies Valence e-vs core e- Lithium Magnesium Aluminum 1st IE: 513 kJ/mol 738 kJ/mol 577 kJ/mol 2nd IE: 7298 kJ/mol 1451 kJ/mol 1817 kJ/mol 3rd IE: 11815 kJ/mol 7732 kJ/mol 2745 kJ/mol

  6. Periodic Trends II Ionization Energy: Periodic trends Why why why??? Exceptions 

  7. Periodic Trends II Electron Affinity: What is electron affinity? Ionization energy in reverse … Periodic trend Relationship between ionization energy and electron affinity Why why why???

  8. Periodic Trends Ionic Size: What is ionic radii and how does it compare to atomic radii? Li+ F Li F- 78 pm 71 pm 152 pm 133 pm

  9. Periodic Trends Ionic Size: The periodic trend is the same as that of atomic size

  10. Periodic Trends Other Trends you probable already know about: Valence electrons, ion formation, metals vs nonmetals, and reactivity alkali metals Real alkali metals AP: Why does the reactions show below form NaCl and not NaCl2? Use ionization energies in your explanation. Na + Cl2 NaCl

  11. Periodic Trends II Sample Problems: Compare the elements C, O and Si. Place in order of increasing atomic radius. Which has the largest ionization energy and why? Which has the more negative electron affinity, O or C?

  12. Periodic Trends

  13. Periodic Trends

More Related