easyMaterial properties · Materials science fundamentals · #2036

2. Covalent bonding

In materials science fundamentals, a unit-cell problem related to covalent bonding uses $n=4$ atoms per cell, atomic mass $M=60\,\mathrm{g}/\mathrm{mol}$ , and cell edge $a=0.290\,\mathrm{nm}$ . Which expression gives theoretical density?

Select your answer

\rho=\frac{Ma^3}{nN_A}

\rho=\frac{nM}{N_Aa^3}

with consistent unit conversions

\rho=nMa^3N_A

\rho=\frac{a^3}{nMN_A}