What is the mass of Br2 that will form if 5.35 g of KBr reacts with excess Cl2

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?

In saturated organic compounds, all the bonds between carbon atoms are called?

Once similarity and one difference between a mixture of elements and a mixture of compounds