Why all ionic compounds are solids at room temperature whereas many molecular compounds are not?

Because these forces are very strong, it takes a lot of energy to melt ionic compounds.

Explanation:

The ions in all ionic compounds. Because these forces are very strong, it takes a lot of energy to melt ionic compounds. Which is why ionic compounds will only convert from the solid state to the liquid state at high temperatures.

The particles of ionic compounds are held together by stronger electrical forces than the particles of molecular compounds.

Explanation:

mechanics (greek   is that area of science concerned with the behaviour of physical bodies when subjected to forces or displacements, and the subsequent effects of the bodies on their environment. the scientific discipline has its origins in ancient greece with the writings of aristotle and archimedes[1][2][3] (see history of classical mechanics and timeline of classical mechanics). during the early modern period, scientists such as galileo, kepler, and newton laid the foundation for what is now known as classical mechanics. it is a branch of classical physics that deals with particles that are either at rest or are moving with velocities significantly less than the speed of light. it can also be defined as a branch of science which deals with the motion of and forces on objects. the field is yet less widely understood in terms of quantum theory.

explanation: