No, the nanometer (nm) is a smaller unit of measurement than the picometer (pm).
The prefix "nano-" denotes a factor of 10^-9, which means that one nanometer is equal to one billionth of a meter (1 nm = 10^-9 m). Nanometers are commonly used to measure objects at the atomic and molecular scale.
On the other hand, the prefix "pico-" indicates a factor of 10^-12. Therefore, one picometer is equal to one trillionth of a meter (1 pm = 10^-12 m). Picometers are typically used to describe extremely small distances, such as atomic and subatomic scales.
To summarize, the order of magnitude from largest to smallest is meter (m) > nanometer (nm) > picometer (pm).