A perfect crystal is one in whichA. the free energy is minimumB. entropy is zero at room temperatureC. each atom is vibrating on its correct lattice position in the crystal structureD. each atom is in rest at its correct lattice position in the crystal structure

A perfect crystal is one in whichA. the free energy is minimumB. entro

1.	A perfect crystal is one in whichA. the free energy is minimumB. entropy is zero at room temperatureC. each atom is vibrating on its correct lattice position in the crystal structureD. each atom is in rest at its correct lattice position in the crystal structure
Answer» Correct Answer - 4 At zero Kelvin, most of the ionic crystals possess no defect as a perfect ordered arrangement of constituent particles in a crystal is possible only at `0 K` . In a crystalline solid, there is a regular arrangment of constitutent particles. However this arrangement is usually not found to be perfect, because a solid contains a large number of small crystals and some of these may not have a perfect regular arrangement of the constituent particles. Imperfection or defeat describes any departure from perfectly ordered arragnement of constituent particles in crystal.

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A perfect crystal is one in whichA. the free energy is minimumB. entropy is zero at room temperatureC. each atom is vibrating on its correct lattice position in the crystal structureD. each atom is in rest at its correct lattice position in the crystal structure

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