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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 Bohr Radius (Bohr) is equal to 5.29177E-11 meters, while 1 Perch (perch) = 5.0292 meters.| 9900 Bohr Radius | to common length units |
|---|---|
| 9900 Bohr | = 5.2388523E-7 meters (m) |
| 9900 Bohr | = 5.2388523E-10 kilometers (km) |
| 9900 Bohr | = 5.2388523E-5 centimeters (cm) |
| 9900 Bohr | = 1.7187835629921E-6 feet (ft) |
| 9900 Bohr | = 2.0625402755906E-5 inches (in) |
| 9900 Bohr | = 5.7292785433071E-7 yards (yd) |
| 9900 Bohr | = 3.2552718996063E-10 miles (mi) |
| 9900 Bohr | = 5.5373134975161E-23 light years (ly) |
| 9900 Bohr | = 0.0019800389140207 pixels (PX) |
| 9900 Bohr | = 3.2742826875E+28 planck length (pl) |