Question

Why do solids have a definite volume

Answer 1

In solids, the constituent atoms or molecules or ions are packed very close to each other, generally in cubic lattices. Due to this, the electrostatic forces of attraction are high and it is very difficult to break the lattice at low temperature and pressure.

Thus, solids have a definite volume because at low temperature and pressure , the coulombic interaction energies cannot be overcome by the physical conditions.

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Answer 2

solids have define volume as the molecule of solid are held tightly , the molecule in solid is fixed and are closer to each other.