Write the formula of the compound whose IUPAC name is iron(ii) tetraoxosulphate(vi)heptahydra

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?

What is the reaction between an acid and a base

How many moles are present in 10.5 grams of nacl?