Lightbulbs'R'Us Warehouse Metals

Metal Symbol $\mu$ (units: $\frac{m/s}{V/m}$) $n$ (units: $\frac{\# electrons}{m^3}$)
Nichrome Ni-Cr-Fe $7.0 \times 10^{-5}$ $9 \times 10^{28}$
Silver Ag $5.7 \times 10^{-3}$ $5.9 \times 10^{28}$
Tungsten W $1.2 \times 10^{-4}$ $6.3 \times 10^{28}$
Aluminum Al $1.3 \times 10^{-3}$ $1.8 \times 10^{29}$
Copper Cu $4.5 \times 10^{-3}$ $8.4 \times 10^{28}$
Gold Au $4.3 \times 10^{-3}$ $6.1 \times 10^{28}$