The quantum numbers of the last electron of nickel could be: A)n = 3,ℓ = 2,m_ℓ = 0,m_s = -1/2 B)n = 4,ℓ = 2,m_ℓ = 0,m_s = +1/2 C)n = 3,ℓ = 1,m_ℓ = 0,m_s = +1/2 D)n = 3,ℓ = 2,m_ℓ = 0,m_s = 0 E)n = 3,ℓ = 2,m_ℓ = 1/2,m_s = +1/2

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Nickel's electron configuration ends in the 3d subshell, which corresponds to n = 3, ℓ = 2. The given quantum numbers in option A correctly represent an electron in the 3d subshell with m_ℓ = 0 and m_s = -1/2, indicating its magnetic and spin quantum numbers respectively.

The Quantum Numbers of the Last Electron of Nickel Could