What is the oxidation no. of Hg in K2HgI4

What forms when chemical reactions combine pollution with sunlight?

In which block of the periodic table is uranium (u) found? s blockd blockp blockf block

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