S is a solid at room temperature.
What substance are the particles arranged in a lattice (a regular structure) at room temperature?
A substance whose particles are arranged in a crystal lattice at room temperature will be a solid.
A solid have a definite shape and volume at room temperature due to the regular arrangement of the particles of the solid.
Solids melt at their melting points. A solid whose melting point is less than room temperature will be a liquid or gas at room temperature.
Room temperature is 25°C
Considering the given table:
Solid S has a melting point above room temperature, therefore S is a solid at room temperature.
In conclusion, solids have definite shapes and volume.
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