CHEM 110 Answers to Eighth Take Home Quiz 1. Write electronic configurations for the following atoms and ions. F- 1s22s22p6 Ne 1s22s22p6 Na+ 1s22s22p6 2. A) How many valence electrons does an atom of oxygen have ? 6 B) What is the valence of oxygen ? 2 3. Which one of the following types of electromagnetic radiation consists of the longest wavelength radiation ? Green light Gamma UV Infrared (IR) Radio X-rays Microwave RADIO Which one has the highest frequency radiation ? GAMMA Which one consists of photons having the greatest energy ? GAMMA 4. When an electron in a sublevel of an excited atom drops into a sublevel of lower energy, how many photons of light are emitted ? one 5. Which of the following electron configurations of atoms correspond to excited states rather than ground states ? O 1s22s22p33s1 excited Na 1s22s22p63s1 ground Na 1s22s22p63p1 excited