the angular momentum of an electron in an hydrogen atom is proportional to (where r is the radius) of orbit Share with your friends Share 3 Vaibhav T. answered this Dear Student, radius of nth orbit, rn α n2Zn α rn12 ......... (1)Now, Angular momentum, Ln=nh2πLn α nor, Ln α rn12 ....... from equation (1) 36 View Full Answer Ruksana Krntk answered this mvr = n h/ 2( pi ) -6