* Convert nanometers to meters: 1 nanometer (nm) = 1 x 10⁻⁹ meters (m)

* Multiply by 120: 120 nm = 120 x 10⁻⁹ m

* Adjust for scientific notation: 120 x 10⁻⁹ m = 1.2 x 10⁻⁷ m

Therefore, 120 nanometers in scientific standard form is 1.2 x 10⁻⁷ meters.