Worksheet: Crystal Systems

In this worksheet, we will practice identifying unit cells of triclinic, monoclinic, orthorhombic, tetragonal, cubic, trigonal, and hexagonal crystals.

Q1:

The unit cell of calcium fluoride at room temperature contains twelve ions and the lattice angles are all 90∘. Which of the following terms best describes the lattice structure of calcium fluoride at room temperature?

  • AHexagonal close-packed
  • BBody-centered cubic
  • CFace-centered cubic
  • DSimple cubic
  • EMonoclinic

Q2:

The unit cell of metallic iron at room temperature contains two atoms and the angles between lattice angles are all 90∘. Which of the following terms best describes the lattice structure of metallic iron at room temperature?

  • ABody-centered cubic
  • BFace-centered cubic
  • CHexagonal close-packed
  • DMonoclinic
  • ESimple cubic

Q3:

Which characteristics does a rhombohedral crystal system have?

  • Aπ‘Ž=𝑏=𝑐, 𝛼=𝛽=𝛾=90∘
  • Bπ‘Žβ‰ π‘β‰ π‘, 𝛼=𝛽=𝛾=90∘
  • Cπ‘Ž=𝑏=𝑐, 𝛼=𝛽=𝛾≠90∘
  • Dπ‘Žβ‰ π‘β‰ π‘, 𝛼=𝛽=𝛾≠90∘

Q4:

A body-centered cubic crystal system is best represented in the unit cell of which crystalline solid?

  • APerovskite
  • BNaCl
  • CRutile
  • DCsCl

Q5:

In the unit cell of Zincblende (zinc sulfide) below, zinc ions are shown in grey and sulfide ions in yellow.

How many ions does the unit cell contain?

Which term best describes the structure of the Zincblende unit cell?

  • AMonoclinic
  • BHexagonal close-packed
  • CBody-centred cubic
  • DSimple cubic
  • EFace-centred cubic

How many sulfide ions are in contact with each zinc ion?

Q6:

In which type of crystal lattice are atoms packed in an ABC layer arrangement as shown?

  • ABody-centered cubic
  • BSimple cubic
  • CHexagonal close-packed
  • DDiamond cubic
  • EFace-centred cubic

Nagwa uses cookies to ensure you get the best experience on our website. Learn more about our Privacy Policy.