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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 Petameters (Pm) is equal to 1000000000000000 meters, while 1 Bohr Radius (Bohr) = 5.29177E-11 meters.| 7 Petameters | to common length units |
|---|---|
| 7 Pm | = 7000000000000000 meters (m) |
| 7 Pm | = 7000000000000 kilometers (km) |
| 7 Pm | = 7.0E+17 centimeters (cm) |
| 7 Pm | = 2.2965879265092E+16 feet (ft) |
| 7 Pm | = 2.755905511811E+17 inches (in) |
| 7 Pm | = 7.655293088364E+15 yards (yd) |
| 7 Pm | = 4349598345661.3 miles (mi) |
| 7 Pm | = 0.7398795053377 light years (ly) |
| 7 Pm | = 2.6456696246513E+19 pixels (PX) |
| 7 Pm | = 4.375E+50 planck length (pl) |