Bohr model The Bohr model exhibits difficulty for atoms with atomic number greater than 137, as any element with an atomic number greater than 137 would require 1s electrons to be travelling faster than c, the speed of light.
Bohr-modellen Bohr-modellen udviser problemer for atomer med atomnumre på mere end 137, da ethvert grundstof med et atomnummer på mere end 137 ville kræve 1s-elektroner, der bevægede sig hurtigere end c, lysets hastighed.