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1. Name 3 ionic compounds that form CCP with 1/2 octahedral holes (alt).

  • CdCl2, MgCl2, NiBr2
  • CdI2, MgCl2, NiBr2
  • CdCl2, TiS2, Mg(OH)2
  • CdCl2, Mg(OH)2, NiBr2
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2. 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

3. Name 3 ionic compounds that form HCP with octahedral holes.

  • TiO2, NiS, FeS
  • NiAs, KBr, TiS2
  • NiAs, NiS, FeS
  • NiAs, NiS, ZnS

4. State the geometry, chemical formula and packing of rutile.

  • TiO2, 1/2 Oct ord.fram. + HCP
  • TiO2, 1/2 Tet + CCP
  • TiO2, 1/2 Oct ord.fram. + CCP
  • TiO, Oct + CCP

5. 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

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