How to show the element from XML (SAXParser) to table?

Periodic Table and Element Questions?

• I've been trying to figure these out for hours but I haven't been able to answer them!! Please just answer one if you can, I would really appreciate it!! 1. In your own words briefly summarize what you have learned about the major groups on the periodic table? 2. Why are elements organized in columns as groups the way they are on the periodic table? 3. You are part of an engineering team that is designing a recovery balloon that can be attached to a sunken ship underwater and then inflated to pull it to the surface. If given the choice between using oxygen gas and neon gas, which gas would be the best choice to use in filling the balloon? Explain the reasoning behind your answer. 4. Which element would be more reactive? Lithium or Cesium? Explain. 5. Which element would be more reactive? Calcium or Bromine? Explain. 6. Which element is considered a metalloid? Aluminum or Silicon? Explain. 7. Which element would most likely not react with Hydrogen? Carbon or Argon? Explain. Thanks So Much!!! :)

• Answer:

  2. The columns have the same type of qualities. 3. Oxygen because it is more easily obtainable.