1.6×10−31C1.6 \times 10^{-31} \mathrm{C}1.6×10−31C
1.9×10−60C1.9 \times 10^{-60} \mathrm{C}1.9×10−60C
1.6×10−19C1.6 \times 10^{-19} \mathrm{C}1.6×10−19C
1.6×10−23C1.6 \times 10^{-23} \mathrm{C}1.6×10−23C
