phosphorus pentachloride is formed when 17.2g of chlorine gas reacts with 23.2g of solid gold. determine the limiting reactant

The alkali metals (group 1) consist of lithium (3), sodium (11), potassium (19), rubidium (37), cesium (55), and francium (87). they are soft, metallic solids with low densities and low melting points. based on the data shown in figure 1, how many valence electrons do alkali metals share?

Name the element in group 17, period 2. (periodic table)

Describe what happens to the molecules as water goes from ice to liquid to vapor. be sure to explain what happens to the temperature during the phase changes.