Al element X belongs to fourth period and fifteenth group of the perio – InterviewSolution

1.	Al element X belongs to fourth period and fifteenth group of the periodic table. Which of the following statements is true?
Answer» It has a completely FILLED s-orbital and a partially filled d-orbital It has completely filled s- and p- ORBITALS anre a partially filled d-orbital It has completely filled s- and p- orbitals and a half filled d-orbital. It has a half-filled p-orbital and completely filled s- and d-orbitals. Solution :Element X is arsenic (As) and its electronic configuration is `[AR]3d^(10) 4s^(2) 4p^(3)`.

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