The gravitational attraction between electron and proton in ahydrogen atom is weaker than the coulomb attraction by a factor ofabout 10–40. An alternative way of looking at this fact is to estimatethe radius of the first Bohr orbit of a hydrogen atom if the electronand proton were bound by gravitational attraction. You will find theanswer interesting.

The gravitational attraction between electron and proton in ahydrogen

1.	The gravitational attraction between electron and proton in ahydrogen atom is weaker than the coulomb attraction by a factor ofabout 10–40. An alternative way of looking at this fact is to estimatethe radius of the first Bohr orbit of a hydrogen atom if the electronand proton were bound by gravitational attraction. You will find theanswer interesting.
Answer» The gravitational attraction between electron and proton in ahydrogen atom is weaker than the coulomb attraction by a factor ofabout 10–40. An alternative way of looking at this fact is to estimatethe radius of the first Bohr orbit of a hydrogen atom if the electronand proton were bound by gravitational attraction. You will find theanswer interesting.

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