EPIC HARD CHEMISTRY QUESTION?

It is not a very hard question to answer when you realize that many of the nonmetals are gases at 0�C. Of the metals given, lithium, sodium, potium, rubidium, and cesium are all solids. Of the nonmetals given, fluorine and chlorine are gases, bromine is a liquid, while iodine is a solid. In the solid and liquid states, the molecules (or atoms) of a substace are close together, so the density is fairly high, and measured in grams per cubic centimeter (milliliter). However, in the gaseous state, the molecules (or atoms) of a gas are very far apart, making its density much, much lower than those of solids and liquids, and it is usually measured in grams per cubic decimeter (Liter). Since nonmetals include all three states of matter, while metals are found mostly in solid state (notable exception is mercury liquid), the densities of nonmetals have a greater range than those of metals.