Exploring Ionic Compounds
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Questions and Answers

What type of crystal lattice is the sodium chloride crystal?

  • Simple cubic lattice
  • Hexagonal close-packed (hcp) lattice
  • Body-centered cubic (bcc) lattice
  • Face-centered cubic (fcc) lattice (correct)

    • Why are most ionic compounds solids with high melting and boiling points?

  • Due to the strong electrostatic forces between the ions (correct)
  • Due to the weak electrostatic forces between the ions
  • Due to the presence of covalent bonds
  • Due to the absence of electrostatic forces

    • Why are some ionic compounds like magnesia (MgO) and alumina (Al₂O₃) used as refractory materials?

  • They are very stable and can withstand high temperatures (correct)
  • They are easily soluble in water
  • They are good conductors of electricity
  • They have low melting points

    • Why are crystal lattices non-conductors of electricity?

    <p>Ions are in fixed positions and unable to move (C)</p> Signup and view all the answers

    What type of ions are present in the sodium chloride crystal lattice?

    <p>Sodium ions at each corner and chloride ions at the center of the face (C)</p> Signup and view all the answers

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