5.195 kg + 10.95 kg + 73.2 kg

Measuring which physical property is most likely to produce the most precise results when trying to identify a substance

2. how is heavy water different from normal water

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?