HARD
12th West Bengal Board
IMPORTANT
Earn 100
Write two limitations of Bohr's atomic model.
Important Questions on Bohr Model, X-Ray Spectra, Wave-Particle Duality
HARD
12th West Bengal Board
IMPORTANT
Find the energies of photons produced due to the transition of an electron of the hydrogen atom from its
second permitted energy level to the first level and
HARD
12th West Bengal Board
IMPORTANT
Find the energy of photons produced due to the transition of an electron of a hydrogen atom from its
the highest permitted energy level to the first permitted level.
EASY
12th West Bengal Board
IMPORTANT
The ground state energy of hydrogen atom is -13.6 eV. What are the kinetic and potential energies of electron in this state? [1 Mark]
EASY
12th West Bengal Board
IMPORTANT
The electron in a hydrogen atom is excited to the n -th excited state. How many possible spectral lines can it emit in the process of going to the ground state?
EASY
12th West Bengal Board
IMPORTANT
State the basic postulates of Bohr's theory of atomic structure. What do you mean by energy levels in a hydrogen atom? How the origin of hydrogen spectra can be explained from this concept?
EASY
12th West Bengal Board
IMPORTANT
How is characteristic x -ray spectra formed. State Moseley's law and briefly state how it can be explained by Bohr's theory?
EASY
12th West Bengal Board
IMPORTANT
State the postulates of Bohr's model of hydrogen atom Hence derive the expression for the radius of the n -th orbit of the electron.
EASY
12th West Bengal Board
IMPORTANT
Explain how Rutherford's -scattering experiment led to the idea of the nucleus of an atom.
