Its something else. You can's say that angular momentum of a body is this because it is always relative to a point. We can say that angular momentum of a body P about a point O is m(OP)*vp where m is mass of body OP is position vector of P wrt O and v is velocity vector of P and * is vector cross product. It is equal to mvr if OP = r and velocity vector are perpendicular to each other. (Which is a special case but may not be always true) For an electron in first orbit of hydrogen like atom, angular momentum of electron wrt nucleus is equal to h/(2pi)
Krishna Gopal Singh
B.Tech Chemical Engg
IIT Delhi 2002
Currently doing PhD from IIT Delhi