Plz help me solve this question is it A, B,C or D

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?

Calculate the concentration of all species in a 0.165 m solution of h2co3.

How many moles of potassium hydroxide are needed to completely react with 2.94 moles of aluminum sulfate