Chromium is a solid at room temperature.Which one of the following explains why chromium is a solid at room temperature?It has a high boiling & melting point.It is malleable.It is ductile.It has a high density.

The reason why chromium is a solid at room temperature is because it has a high boiling and melting point. The boiling and melting points of a substance determine the state of the substance at different temperatures. If a substance has a high melting point, it means it requires a lot of heat energy to change from solid to liquid. Similarly, a high boiling point means it requires a lot of heat energy to change from liquid to gas.

Chromium has a melting point of 1907 degrees Celsius and a boiling point of 2671 degrees Celsius. These are very high temperatures, much higher than room temperature (which is typically around 20-25 degrees Celsius). Therefore, at room temperature, chromium does not have enough heat energy to change from a solid to a liquid or gas, so it remains a solid.

The other properties mentioned - malleability, ductility, and high density - are also characteristics of metals but do not directly explain why chromium is a solid at room temperature. Malleability refers to the ability of a substance to be hammered or rolled into thin sheets