D=\frac{m}{V}=\frac{A}{6,023\times 10^{23}}\div ( \frac{4}{3}\pi\timesR^{3} (1)Thay R=1,5\times 10^{-13}\times\sqrt[3]{A} vào (1)\Rightarrow D hạt nhân=1,17\times 10_{14}
$D=\frac{m}{V}=\frac{A}{6,023\times 10^{23}}\div ( \frac{4}{3}\pi\times
R^{3} (1)
$Thay
$R=1,5\times 10^{-13}\times\sqrt[3]{A} vào (1)\Rightarrow D
hạt nhân=1,17\times 10_{14}
$