Question

Polyhedral description of solids-structure of na2o

Answer 1

Explanation:

Coordination – Na+ 4 (tetrahedral) : O2- 8 (cubic)

ccp O2- with Na+ in all Td holes

Polyhedra – Edge-sharing NaO4 tetrahedra, edge-sharing ONa8 cubes

Anions form the cubic close packing

while cations fill all tetrahedral holes.

Answer 2

Explanation:

so far the NaCl, ZnS and Na2O structure have been described in two ... consider how neighboring polyhedra are linked in 3D. ... Two distinct descriptions in a 3D network