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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 Zeptometers (zm) is equal to 1.0E-21 meters, while 1 Bohr Radius (Bohr) = 5.29177E-11 meters.| 74 Zeptometers | to common length units |
|---|---|
| 74 zm | = 7.4E-20 meters (m) |
| 74 zm | = 7.4E-23 kilometers (km) |
| 74 zm | = 7.4E-18 centimeters (cm) |
| 74 zm | = 2.4278215223097E-19 feet (ft) |
| 74 zm | = 2.9133858267717E-18 inches (in) |
| 74 zm | = 8.092738407699E-20 yards (yd) |
| 74 zm | = 4.5981468225563E-23 miles (mi) |
| 74 zm | = 7.8215833421414E-36 light years (ly) |
| 74 zm | = 2.7968507460599E-16 pixels (PX) |
| 74 zm | = 4.625E+15 planck length (pl) |