Question

State Bohr's first and second postulates. Use them to derive an expression for the radius of the nth orbit in a hydrogen atom.

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

(i) State three postulates of Bohr's theory of hydrogen atom. (ii) Find the angular momentum of an electron revolving in the second orbit in Bohr's hydrogen atom.