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6.5 Quantum Numbers nts Define and describe the quantum numbers Question Which electron spin state has the lower energy in th
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Answer #1

Energy of a quantum state depends on prnciple quantum number(n), not on azimuthal or spin quantum number.

So, in absence of external magnetic field, ms=+1/2 and ms=-1/2 have the same energy that means degenerate states.

But in presence of external magnetic field, degeneracy is lifted.

Answer: ms=+1/2 and ms=-1/2 have the same energy.

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