Unit Cell Video Lessons

Video Thumbnail

Concept

Problem: Sodium oxide (Na2O) adopts a cubic structure with Na atoms represented by green spheres and O atoms by red spheres.The unit cell edge length is 5.55 Å . Determine the density of Na2O.

FREE Expert Solution

We are being asked for the density of Na2O, given the unit cell edge length of 5.55 Å

Looking at the illustration, Na2O has face centered cubic structure. 


Recall that the face-centered cubic lattice contains an atom in each of the faces of the cube and an atom in each of the corners

It looks like this:



 There are 4 atoms in a unit cell for a Face Centered Cubic structure (z=4).

View Complete Written Solution
Problem Details
Sodium oxide (Na2O) adopts a cubic structure with Na atoms represented by green spheres and O atoms by red spheres.

A diagram shows a cube with oxygen as the corners and in the center of cube faces. Within the cube are also 8 sodium atoms.

The unit cell edge length is 5.55 Å . Determine the density of Na2O.

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Unit Cell concept. You can view video lessons to learn Unit Cell. Or if you need more Unit Cell practice, you can also practice Unit Cell practice problems.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Pinkston's class at UNR.