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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 Exameters (Em) = 1000000000000000000 meters.| 644000000 Bohr Radius | to common length units |
|---|---|
| 644000000 Bohr | = 0.0340789988 meters (m) |
| 644000000 Bohr | = 3.40789988E-5 kilometers (km) |
| 644000000 Bohr | = 3.40789988 centimeters (cm) |
| 644000000 Bohr | = 0.11180773884514 feet (ft) |
| 644000000 Bohr | = 1.3416928661417 inches (in) |
| 644000000 Bohr | = 0.037269246281715 yards (yd) |
| 644000000 Bohr | = 2.1175708114611E-5 miles (mi) |
| 644000000 Bohr | = 3.602050396364E-18 light years (ly) |
| 644000000 Bohr | = 128.8025313767 pixels (PX) |
| 644000000 Bohr | = 2.129937425E+33 planck length (pl) |