Angstrom (Å) is equal to (a) 0.01 mm (b) 0.001 mm (c) 0.0001 mm (d) 0.00001 mm.
Option C An angstrom (symbol Å) is a nonSI unit of length that is internationally recognised, equal to 0.1 nanometer (nm). It can be written in scientific notations as 1 × 10 –10 m. It is used in expressing the size of atoms, length of chemical bonds etc. It is named after Anders Jonas Angstrom. Angstrom = 0.0001mm.