Which Bohr's orbit of `Be^(3+)` has the same orbit radius as that of the ground state of hydrogen atom?

Which state of the triply ionized Beryllium (Be^(3+)) has the same orbit radius as that of the ground state of hydrogen atom?

State Bohr’s postulates for hydrogen atom.

What is the angular momentum of an electron in ground state in hydrogen atom?

What is the ratio of radii of the orbits corresponding to first excited state and ground state in a hydrogen atom?

State the postulates of Bohr’s atomic model.

On the basis of Bohr's atomic model,find an expression for radius of nth orbit of a hydrogen atom.

Determine the speed of the electron in the n=3 orbit of hydrogen atom.

Estimate the ratio of the wavelength associated with the electron orbiting around the nucleus in the ground and first excited state of hydrogen atom.