State Bohr’s postulates for hydrogen atom.

State Bohr’s postulates for atomic model and using them derive an expression forthe total energy of an electron revolving in a stationary nth orbit of hydrogen atom.

State Bohr’s postulates for atomic model and derive an expression for radius of the electron in an orbit.

State Bohr’s postulates for atomic modeland using them derive an expression for the radius of nth orbit in hydrogen atom and show that radii are in the ratio 1 : 4 : 9 :16 :..........

State the basic postulates of Bohr’s atomic model. Find the relation for total energy of electron in nth Bohr’s stationary orbit.

State the postulates of Huygens' wave theory.

State the postulates of Bohr’s atomic model.

State Bohr's postulate of quantisation of angular momentum of the orbiting electron in hydrogen atom?

State and explain the Bohr's postulates for the structure of the hydrogen atom. Obtain the expressio for Radii of permitted orbits.