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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.| 4903000000000 Exameters | to common length units |
|---|---|
| 4903000000000 Em | = 4.903E+30 meters (m) |
| 4903000000000 Em | = 4.903E+27 kilometers (km) |
| 4903000000000 Em | = 4.903E+32 centimeters (cm) |
| 4903000000000 Em | = 1.6085958005249E+31 feet (ft) |
| 4903000000000 Em | = 1.9303149606299E+32 inches (in) |
| 4903000000000 Em | = 5.3619860017498E+30 yards (yd) |
| 4903000000000 Em | = 3.0465829555396E+27 miles (mi) |
| 4903000000000 Em | = 5.1823274495296E+14 light years (ly) |
| 4903000000000 Em | = 1.8531025956665E+34 pixels (PX) |
| 4903000000000 Em | = 3.064375E+65 planck length (pl) |