Explain the relationship of selected oxidation numbers to valence electrons for Groups 1, 2& 13-18. (Hint : 13-10=3) How can the atom's electron configuration be predicted on the basis of its location in the periodic table?

The density of the solid phase of a substance is 0.90 g/cm3 and the density of the liquid phase is 1.0 g/cm3. a large increase in pressure will a. lower the freezing point b. raise the freezing point c. lower the boiling point d. raise the triple point e. lower the triple point