The Electric Charge on an Electron Is 0 $2.5 \times 10 ^ { - 19 }$

Multiple Choice

The electric charge on an electron is 0.00000000000000000025 coulomb. Write this number in scientific notation.

A) $2.5 \times 10 ^ { - 19 }$ coulomb
B) $2.5 \times 10 ^ { - 18 }$ coulomb
C) $25 \times 10 ^ { - 20 }$ coulomb
D) $0.25 \times 10 ^ { - 18 }$ coulomb
E) $2.5 \times 10 ^ { - 20 }$ coulomb