List two substances that are solid two that are liquids and gases at room temperature

Which of the following statements is true about planck’s law

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 happens to the atomic radius when an elctron is lost