What are the similarities between the Rutherford-Bohr atom and the modern quantum mechanical model? What are the differences? Why is the Rutherford-Bohr model still useful? In what situations would you use one model over the other? Why?
What is ionization energy? How is it related to electronegativity? What is the pattern for ionization energy in the periodic table? What is the pattern for electronegavity in the periodic table?