1. Challenge 3 T. Trimpe 2008 http://sciencespot.net/

2. Use a periodic table and your knowledge of the element families to identify each element by name. 1. I am a Noble Gas that is found in the 6 th period. 2. I am a member of the Alkaline Earth family and have 88 electrons. 3. I am a transition metal that is a liquid at room temperature. 4. I am a member of the Carbon family that is found in the 5 th period. 5. I am a Halide that is a gas at room temperature and have 3 energy levels.

3. The answers are … Radon Radium Mercury Tin Chlorine 1. I am a Noble Gas that is found in the 6 th period. 2. I am a member of the Alkaline Earth family and have 88 electrons. 3. I am a transition metal that is a liquid at room temperature. 4. I am a member of the Carbon family that is found in the 5 th period. 5. I am a Halide that is a gas at room temperature and have 3 energy levels.