1.6×10−19J1.6 \times 10^{-19}J1.6×10−19J
1.6×10−19C1.6 \times 10^{-19} {C}1.6×10−19C
1.6×10−27J1.6 \times 10^{-27}J1.6×10−27J
1.6×1027C1.6 \times 10^{27} {C}1.6×1027C
