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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.| 1 Exameters | to common length units |
|---|---|
| 1 Em | = 1000000000000000000 meters (m) |
| 1 Em | = 1000000000000000 kilometers (km) |
| 1 Em | = 1.0E+20 centimeters (cm) |
| 1 Em | = 3.2808398950131E+18 feet (ft) |
| 1 Em | = 3.9370078740157E+19 inches (in) |
| 1 Em | = 1.0936132983377E+18 yards (yd) |
| 1 Em | = 6.2137119223733E+14 miles (mi) |
| 1 Em | = 105.6970721911 light years (ly) |
| 1 Em | = 3.7795280352161E+21 pixels (PX) |
| 1 Em | = 6.25E+52 planck length (pl) |