Electron Affinity Radius Worksheet - Answer Key

 

Back to the other Periodic Table Trends Workbooks and other General Chemistry Workbooks

Go To -> Worksheet - Answer Key - Solutions Manual

  1. What is electron affinity?

    The energy change when an e- is added to a gaseous atom.

    X(g) + e-    → X – (g)

    An endothermic process.

    2.  

     

  2. What element has the greatest electron affinity?

    Chlorine has the greatest electron affinity.  The reason that chlorine has a greater electron affinity than fluorine us that fluorine small size leads to some electron-electron repulsion – making it less favorable.

    3.  

     

  3. General trends on the periodic table:

    4.  

     

  4. How would you determine the electron affinity for Mg2+?

    Look at the second ionization energy of magnesium.

    Remember that electron affinity means adding an electron -
    Mg 2+ + e -     → Mg+
                                                                                       
    This reaction is the reverse of the second ionization energy of Mg.

     

    So to determine the energy associated with the flip reaction – just change the sign of the ionization energy.

Home . Support Us . Contact Us