1. The problem states that the charge of an electron is given as 0.00000000000000000016 coulomb. 2. This number can be written in scientific notation to make it easier to understand and work with. 3. Count the number of decimal places after the decimal point before the first non-zero digit: there are 19 zeros. 4. Therefore, the charge can be written as $$1.6 \times 10^{-19}$$ coulombs. 5. This is the standard accepted value for the elementary charge of an electron. 6. So, the charge of an electron is $$1.6 \times 10^{-19}$$ coulombs.