When hydrogen atom is in its first excited level, its radius is
When hydrogen atom is in its second excited level, then its radius becomes
The ratio of energies of hydrogen atom in its first excited state to third excited state is
An electron in a hydrogen atom makes a transition from first excited state to ground state . The equivelent currect due to circulating electron :
A hydrogen atom is in 5^("in") excited state. When the electron jumps to ground state the velocity of recoiling hydrogen atom is "…................" m//s and the energy of the photon is "…........" eV.
In the ground state, the electron in the hydrogen atom moves in a circular orbit of radius r_0 . When the hydrogen atom goes in the second excited state, the radius of the electron orbit is increased by
When a hydrogen atom is excited from ground state to first excited state, then
When a hydrogen atom is excited from ground state to first excited state then
