Life on the Edge HW (place your answers on page 74 in your notebook) 1. Provide the following information for element number 55. What element has atomic number, 55? How many protons are in the nucleus? Speculate on the number of neutrons in the nucleus. How many electrons does a neutral atom of this element have? How many of those electrons are core electrons? How did you determine that? How many valence electrons does this element have? What group is it in? What other elements have similar chemistry? How do you know? 2. Answer the same questions as above for element number 82.