Identify the set of four quantum numbers that could represent the electron gained to form the Br ION from the Br atom. A)n = 4,l = 2,m_l = 1,m_s = - $\frac{1}{2}$ B)n = 4,l = 0,m_l = 1,m_s = + $\frac{1}{2}$ C)n = 4,l = 1,m_l = 1,m_s = - $\frac{1}{2}$ D)n = 3,l = 2,m_l = 2,m_s = + $\frac{1}{2}$ E)n = 5,l = 1,m_l =-1 ,m_s = + $\frac{1}{2}$

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Quizplus · Accepted Answer

To form a Br- ion from a Br atom, an electron is gained. This means that the values of n, l, ml, and ms for the added electron would be different than the original atom. In the Br atom, the electron configuration is [Ar]3d10 4s2 4p5. To form Br-, one electron is gained to complete the p sublevel, becoming [Ar]3d10 4s2 4p6, which has an n value of 4, an l value of 1 (since it's in the p sublevel), an ml value of 1 (since it's in the px orbital), and an ms value of -1/2 (since it's the singly-occupied electron in the px orbital). Therefore, choice C, with n = 4, l = 1, ml = 1, and ms = -1/2, is the only valid option.

Identify the Set of Four Quantum Numbers That Could Represent 12\frac{1}{2}21​

Identify the Set of Four Quantum Numbers That Could Represent $\frac{1}{2}$