Consider an excited state configuration for He, 1s¹ 2p¹. (a) Find all the possible term symbols for this configuration. (b) Use Hund's rules to determine which of the term symbols obtained in (a) is the lowest energy state.

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Techniques and applications of quantum theory

Quantum theory, often known as quantum physics, is the foundation of modern physics and encompasses the nature and behavior of matter and energy at the atomic and molecular levels. As the exact nature and behavior of atomic and subatomic particles are impossible to determine, the laws of classical physics do not apply to this discipline. As a result, quantum field theory is primarily based on assumptions and probabilities.