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6. Name the structure that is likely to have a radius ratio of about 0.999.
- Wurtzite or Zinc Blende
- NaCl or Zinc Blende
- CsCl or Fluorite
- NaCl or Rutile
7. State the geometry, chemical formula and packing of anatase.
- TiO2, 1/2 Oct ord.fram. + CCP
- TiO2, 1/2 Oct alt + CCP
- TiO, Oct + HCP
- TiO, 1/2 Oct ord. fram. + CCP
8. Name 3 ionic compounds that form HCP with 1/2 octahedral holes (alt).
- ZnS, AlN, NH4F
- CdI2, TiS2, Mg(OH)2
- Mg(OH2), TiS2, NH4F
- CdI2, AlN, NH4F
9. Name 3 ionic compounds that form HCP with 1/2 octahedral holes (ord. fram.).
- TiO2, SnO2, MgF2
- ZnS, NiAs, MgF2
- Mg(OH2), TiS2, NH4F
- TiO2, NiS, FeS
10. Name the structure that is likely to have a radius ratio of about 0.574.
- CsCl or Fluorite
- NaCl or Rutile
- Fluorite or CsCl
- Rutile or Zinc Blende
11. State the geometry, chemical formula and packing of cadmium chloride.
- CdCl2, 1/2 Oct ord. fram. + CCP
- CdCl2, 1/2 Oct alt + CCP
- CdCl2, 1/2 Oct alt + HCP
- CdCl, 1/2 Oct alt + CCP
12. Name 3 ionic compounds that form CCP with octahedral holes.
- TiO2, KBr, MgO
- NaCl, ZnS, MgO
- NaCl, KBr, MgO
- NaCl, CdS, TiS2
13. State the geometry, chemical formula and packing of wurtzite.
- ZnS, Tet + HCP
- ZnS, 1/2 Tet + HCP
- ZnS2, 1/2 Oct alt + HCP
- ZnS, 1/2 Tet + CCP
14. State the geometry and packing of NaCl.
- Tet + CCP
- Oct + CCP
- Tet + HCP
- Oct + HCP
15. Name 3 ionic compounds that form CCP with 1/2 octahedral holes (alt).
- CdCl2, Mg(OH)2, NiBr2
- CdI2, MgCl2, NiBr2
- CdCl2, MgCl2, NiBr2
- CdCl2, TiS2, Mg(OH)2
16. Name 3 ionic compounds that form HCP with 1/2 tetrahedral holes.
- TiS2, AlN, NH4F
- ZnS, AlN, NH4F
- ZnS, TiO2, NH4F
- ZnS, NiAs, MgF2
17. State the geometry, chemical formula and packing of fluorite.
- CaF, Oct + HCP
- CaF2, Tet + CCP
- CaF2, Oct + HCP
- CaF, Tet + CCP
18. Name an ionic compound that forms HCP with tetrahedral holes.
19. Name 3 ionic compounds that form CCP with 1/2 tetrahedral holes.
- ZnS, CdS, SiC
- ZnS, AlN, SiC
- MgO, SnO2, MgF2
- FeS, CdS, SiC
20. Name 3 ionic compounds that form HCP with octahedral holes.
- TiO2, NiS, FeS
- NiAs, NiS, FeS
- NiAs, NiS, ZnS
- NiAs, KBr, TiS2