Which of the following has the greatest mass, in grams? 1 atom of lead (pb) 0.5 mol silver (ag) atoms 0.3 mol gold (au) atoms 25 atoms of mercury (hg)

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?

Asolution contains 225 g of sodium chloride, nacl, dissolved in enough water to make a 0.25 l of solution. what is the molarity of the solution?

If two atoms are bonded to a central atom with no lone pairs, how will they be arranged