An atom of element number 33 (As) is in its ground electronic state. Which one of the following sets quantum numbers could not apply to any of its electrons? A)n = 2 l = 1 m_l = −1 m_s = +½ B)n = 3 l = 0 m_l = 0 m_s = −½ C)n = 3 l = 2 m_l = −2 m_s = −½ D)n = 4 l = 0 m_l = 0 m_s = −½ E)n = 4 l = 2 m_l = 1 m_s = +½

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Quizplus · Accepted Answer

Arsenic (As) has an electron configuration of [Ar] 3d¹⁰ 4s² 4p³. The quantum numbers in option E correspond to an electron in the 4d subshell, which does not exist in the ground state configuration of arsenic.

An Atom of Element Number 33 (As) Is in Its