Question

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 ?

What is meant by ionisation energy? Write its value for hydrogen atom.