The Hydrogen-Like Elements (Valence +1)exhibit a Splitting of the Energy

question 72

Multiple Choice

The hydrogen-like elements (valence +1) exhibit a splitting of the energy states without an external magnetic field; this is due to

• A)the interaction of the spin and orbital angular momenta.
• B)the penetration of the electron into the inert core of filled subshells.
• C)the fact that in a downward transition the orbital angular momentum must change by one.
• D)the requirement that no two electrons can be in the same state at the same time.
• E)None of these is correct.

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