Which quantum number gives the approximate energy of an electron in the quantum mechanical model of the atom? a) n b) i c) m1 d) m2 e) none of the above.

Option A) n

Explanation:

In accordance to Quantum Mechanical model of an atom:

The Principle Quantum number (n) gives the description of the shell of an electron and the energy level of an electron in an atom.The angular momentum also referred to as Azimuthal Quantum number (l) gives the description of  the shape of the orbitals and helps in determination of angular momentum magnitude.The magnetic quantum number () describes the energy levels or the number of orbitals contained in a subshell and the way these are oriented within.The spin quantum no. () determines the elelctron spin's direction which may be () or ().

Iwould have to say sorry i can't elaborate more. hope this though!