1. The problem statement, all variables and given/known data Na has a bcc structure with molecular mass of 22.99 gr/mol, mass density of 0.971 gr/cm^3. The average speed of sound in Na (at room temperature=300K) is 3200 m/s. Calculate the Debye temperature for Na 2. Relevant equations I worked out this equation to calculate the Debye temperature (If needed I can show how) 3. The attempt at a solution I plugged in all the numbers in the above equation with the correct units and I get that the Debye temperature is 280.3K. However, in literature I found that it is approximately 150K. Is there something wrong with my calculations? Am I missing out on something here? Thank you!