Which of the following statements concerning the quantum numbers are correct?

o Azimuthal quantum number or l is the orbital angular momentum value of a certain orbital. And it defines the 3-D shape of an orbital by introducing the concept of angular momentum.

Spin quantum number m_s is the value of spin angular momentum of an electron as electron rotates around its axis (also revolves around nucleus, like earth revolving sun ) , therefore beside of having charge and mass an electron also has a certain orientation of the spin relative to the chosen axis which gives rise to the concept of spin angular quantum number (m_s).

Other 2 options

(ii) The principal quantum number determines the orientation and energy of the orbital (principal quantum number only can determine the size and energy to a large extent of the orbital, not orientation because the spin quantum number does that ) and

(iii) The magnetic quantum number determines the size of the orbital (ml determines the spatial orientation of an orbital among the chosen coordinate axes) are wrong.