Question 2: What are Bohr’s postulates about Hydrogen atom? Hence derive expressions for (i) radii of electron orbit (ii) energy of the electron.
Bohr’s postulates about H atom
(1) Electron revolves around the nucleus under the influence of the electrostatic force between the electron and nucleus.
(2) Electron cannot revolve around the nucleus in any arbitrary orbits. Only those orbits are allowed for which the orbital angular momentum is an integral multiple of (h/2π). Therefore,
For n = 1, 2, 3…