Which statement describes the 3d, 4s, and 4p orbitals of Arsenic (As) based on its electronic configuration and position in the periodic table?

Arsenic has atomic number 33, so its electron configuration is [Ar] 3d¹⁰ 4s² 4p³. The 3d subshell can hold 10 electrons and the 4s subshell can hold 2, so both are completely filled. The 4p subshell can hold 6 electrons, but arsenic has only 3 there, so it is partially filled. Thus, the statement that the 3d and 4s orbitals are completely filled and the 4p orbital is partially filled is correct.

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