How many microns is a molecule of dissolved salt?

A molecule of dissolved salt, such as sodium chloride (NaCl), is approximately 0.2 nanometers in diameter, which is equivalent to 0.0002 microns. Since one micron is equal to 1,000 nanometers, this means that the size of a salt molecule is significantly smaller than a micron. In summary, a dissolved salt molecule is about 0.0002 microns in size.