Which factor is generally responsible for high melting points?

Classify each statement about effective nuclear charge, zeff, as true or false.

If soap hits the floor, is the soap dirty or the floor

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?