The Alkaline Earths and the Halogens: Two Families in the Periodic Table
Prelaboratory Questions
1. All of the common noble gases are monatomic and low-boiling. Their boiling points in °C are: Ne, –245; Ar, –186; Kr, –152; Xe, –107. Using the Periodic Table, predict as best you can the molecular formula and boiling point of radon, the only radioactive element in this family.
_______________________ ____________________°C Molecular Formula Boiling Point
1. Substances A, B, and C can all act as oxidizing agents. In solution, A is green, B is red, and C is yellow. In the reactions in which they participate, they are reduced to A-, B-, and C- ions respectively, all of which are colorless.