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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 Exameters (Em) is equal to 1000000000000000000 meters, while 1 Bohr Radius (Bohr) = 5.29177E-11 meters.| 499000000000 Exameters | to common length units |
|---|---|
| 499000000000 Em | = 4.99E+29 meters (m) |
| 499000000000 Em | = 4.99E+26 kilometers (km) |
| 499000000000 Em | = 4.99E+31 centimeters (cm) |
| 499000000000 Em | = 1.6371391076115E+30 feet (ft) |
| 499000000000 Em | = 1.9645669291339E+31 inches (in) |
| 499000000000 Em | = 5.4571303587052E+29 yards (yd) |
| 499000000000 Em | = 3.1006422492643E+26 miles (mi) |
| 499000000000 Em | = 52742839023359 light years (ly) |
| 499000000000 Em | = 1.8859844895728E+33 pixels (PX) |
| 499000000000 Em | = 3.11875E+64 planck length (pl) |