question_answer

State Bohr's postulate of quantization of aneular momentum of the orbiting electron in hydrogen atom.                        

Answer:

                According to Bohr's theory, only such orbits are permissible for the motion of an electron around the nucleus in which the angular momentum of an electron is integral multiple of \[h/2\pi \].                 \[L=m\upsilon r=\frac{nh}{2\pi },\]          \[n=1,2,3,....\] Here \[\mathbf{n}\] is the principal quantum number.