# Problem: The substance lithium is found to crystallize in a cubic lattice, with an edge length of 346.0 pm. If the density of solid lithium is 0.5565 g/cm3, how many Li atoms are there per unit cell?

###### FREE Expert Solution
87% (252 ratings)
###### FREE Expert Solution

We’re being asked to calculate how many Li atoms are present per unit cell if lithium (Li) crystallizes in a cubic lattice.

We’re going to calculate how many Li atoms per unit cell using the following steps:

Step 1: Calculate the volume of the 1 unit cell using the edge length.
Step 2: Calculate the mass of Li atoms in 1 unit cell using density.
Step 3: Calculate how many Li atoms are present per 1 unit cell.

Step 1: Calculate the volume of the unit cell in cm3.

87% (252 ratings) ###### Problem Details

The substance lithium is found to crystallize in a cubic lattice, with an edge length of 346.0 pm. If the density of solid lithium is 0.5565 g/cm3, how many Li atoms are there per unit cell?

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.

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Based on our data, we think this problem is relevant for Professor All Professors' class at SDSU.