20. Consider the reaction: 2A1 + 312 > 2All:
Determine the limiting reactant and the theoretical yield of the product if one starts
with:
(a) 1.20 mol Al and 2.40 mol iodine.
(b) 1.20 g Al and 2.40 g iodine

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?