Question

An electron makes a transition from orbit n = 2 to orbit n = 1, in Bohr's model of hydrogen atom. Consider change in magnitudes of its kinetic energy (K) and potential energy (U).

State Bohr's postulates and derive an expression for the energy of electron in nth orbit in Bohr's model of hydrogen atom.

Calculate binding energy per nucleon (in MeV) of ¹²₆C. Given : m(¹²₆C) = 12.000000 u, m(¹₀n) = 1.008665 u, m(¹₁H) = 1.007825 u

The ground state energy of hydrogen atom is −13·6 eV. What is the potential energy and kinetic energy of an electron in the third excited state ?