Which set of quantum numbers corresponds to the electrons in He? A) n = 1, l = 0, m_l = 1 B) n = 1, l = 0, m_l = 0 C) n = 1, l = 1, m_l = -0 D) n = 1, l = 0, m_l = -1 E) n = 1, l = 2, m_l = 0

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He has two electrons and therefore, the set of quantum numbers should be able to describe two electrons. The only option that has two quantum numbers for the two electrons is option B, where n=1 and l=0. The value of mS and lS do not matter as they describe the spin of the electrons and can have either +1/2 or -1/2.

Which Set of Quantum Numbers Corresponds to the Electrons in He