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The Bohr radius (a0 or rBohr) is a physical constant, approximately equal to the most probable distance between the proton and electron in a hydrogen atom in its ground state. It is named after Niels Bohr, due to its role in the Bohr model of an atom. Its value is 5.2917721067×10^−11 m.
In relation to the base unit of [length] => (meters), 1 Femtometers (fm) is equal to 1.0E-15 meters, while 1 Bohr Radius (Bohr) = 5.29177E-11 meters.| 45 Femtometers | to common length units |
|---|---|
| 45 fm | = 4.5E-14 meters (m) |
| 45 fm | = 4.5E-17 kilometers (km) |
| 45 fm | = 4.5E-12 centimeters (cm) |
| 45 fm | = 1.4763779527559E-13 feet (ft) |
| 45 fm | = 1.7716535433071E-12 inches (in) |
| 45 fm | = 4.9212598425197E-14 yards (yd) |
| 45 fm | = 2.796170365068E-17 miles (mi) |
| 45 fm | = 4.7563682485995E-30 light years (ly) |
| 45 fm | = 1.7007876158473E-10 pixels (PX) |
| 45 fm | = 2.8125E+21 planck length (pl) |