2.56×10−19N2.56 \times 10^{-19} N2.56×10−19N
2.56×10−9N2.56 \times 10^{-9} N2.56×10−9N
25.6×10−19N25.6 \times 10^{-19} N25.6×10−19N
25.6×10−9N25.6 \times 10^{-9} N25.6×10−9N
