On applying high pressure 6:6 coordination of NaCl structure changes to 8:8 coordinaton of CsCl structure and on supplying heat - Chemistry - The Solid State

Question

On applying high pressure 6:6 coordination of NaCl structure
changes to 8:8 coordinaton of CsCl structure and on supplying heat
coordination of CsCl type changes to that of NaCl type Will this be
considered as a defect? Explain

Divya Mahesh · Accepted Answer

Look I think it induces lattice defect Because when we apply
pressure the constituent particles come closer Which means they
have shifted from their original position(lattice point) And when
you increase temperature, thermal energy among particles increase
so they move apart, again shifting from original position So it
shows thermodynamic defect I guess

On applying high pressure 6:6 coordination of NaCl structure changes to 8:8 coordinaton of CsCl structure and on supplying heat coordination of CsCl type changes to that of NaCl type. Will this be considered as a defect? Explain.