Students were asked to identify the location of elements in the periodic table based on clues printed on game cards. Element I Element III • Shiny black solid • Metalloid • Colortess gas • Nonmetal 8 valence electrons • 5 energy levels • 3 valence electrons • 2 energy levels Element II Element IV • Steel-gray solid • Brittie metalloid • Silvery-white solid • Soft metal • 2 valence electrons • 6 energy levels • 5 valence electrons •4 energy levels Based on the data, which periodic table shows the correct location of the four elements?

Use Coulomb’s Law and principles of atomic structure to answer these questions. Use bullet points for your answer, rather than writing a paragraph.   Which atom has a larger ionization energy, Na or K ? Why?                         Which atom has a larger atomic radius, S or Cl ?

Which pair of elements do you expect to be most similar? Why?a) N and Nib) Mo and Snc) Na and Mgd) Cl and Fe) Si and P

Which of the following statements are not true about the Rutherford Planetary Model?   Loss of energy by an electron results in a change in position relative to the nucleus. Orbiting electrons are accelerating. Accelerating electrons give off electromagnetic radiation. Electrons increase distance from the nucleus after energy loss. Electrons follow an orbital path.