Chemistry Homework Solutions
Problem
#24657

Length of a unit cell edge

Potassium bromide, KBr, crystallizes like NaCl in a face centered cubic lattice.  The ionic radius of K+ is 133 pm and the ionic radius of Br- is 195 pm.  Assuming that all Br- ions are positioned in the face and corners of the unit cell, while the K+ ions are positioned along the edge alternating between anions, calculate the length of a unit cell edge.  Show work and thanks for your help and time.


Solution Summary

The solution includes cartoons that demonstrate the close packing of FCC lattice and explains how to find the unit cell dimensions.

Solution
What is this?
By OTA - Overall OTA Rating
Yinon Shafrir, PhD - 5/5
Purchase Cost Now
$2.19 CAD (was ~$3.99)
Included in Download
  • Plain text response
  • Attached file(s):
    • BM 24657.doc
    • BM 24657.pdf
$2.19 Instant Download
Add to Cart
Why you can trust BrainMass.com
  • Your Information is Secure
  • Best Online Academic Help Service
  • Students find real academic Success
Related Solutions
  • solids - Lead has an atomic radius of 175 pm and crystalizes in a face centered cubic structure. Find the mass of the unit cell in grams, the volume of the unit cell in cubic centimeters, and the density of t ...
  • Packing of Particles in Solids-space Lattices - Hexagonal Closet Packaging vs. Cubic Closet Packaging (face-centered) vs. Body-centered a) Which of the three types of packaging has the least efficient arrangement of atoms? Justify the answer. ...
  • Mass Volume and Density in g/cm cubed - Lead has an atomic radius of 175 pm and crystallizes in a face centered cubic structure. Find the mass of the unit cell in grams, thje volume of the unit cell in cubic centimeters, and the density o ...
  • Radius/Density From bcc and fcc Unit Cells - Krypton crystallizes as a fcc (face centered cubic unit cell) having an edge length of 559 pm. (a.)What is the density of solid Krypton? (b.) What is the atomic radius of a krypton atom? (c.)Wha ...
  • Ionic Bonding - A certain form of AgI adopts the zincblende (ZnS & FCC)structure. The density of the salt is 5.69 g/cm3. a) Calculate the length of a side of the unit cell b) Calculate the distance between the Ag+ ...
Browse