<P> The Bohr radius ( a or r ) is a physical constant , approximately equal to the most probable distance between the nucleus and the 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 6989529177210670000 ♠ 5.291 772 1067 ( 12 ) × 10 m . </P>
<P> The Bohr radius ( a or r ) is a physical constant , approximately equal to the most probable distance between the nucleus and the 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 6989529177210670000 ♠ 5.291 772 1067 ( 12 ) × 10 m . </P>
what is the radius of the hydrogen atom
what is the radius of the hydrogen atom
5.291 772 1067 ( 12 ) × 10 m
5.291 772 1067 ( 12 ) × 10 m