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Which electron configuration violates Hund's rule?

Which electron configuration violates Hund's rule?

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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**Question:** Which electron configuration violates Hund's rule? **Options:** A) \[ \text{[He]}2s^22p_x^22p_y^22p_z^1 \] B) \[ \text{[He]}2s^22p_x^22p_y^12p_z^2 \] C) \[ \text{[He]}2s^22p_x^12p_y^22p_z^2 \] D) \[ \text{[He]}2s^22p_x^22p_y^2 \] E) \[ \text{[He]}2s^22p_x^12p_y^12p_z^2 \] **Explanation:** This question asks which electron configuration does not follow Hund's rule. Hund's rule states that every orbital in a subshell is singly occupied before any orbital is doubly occupied, and all electrons in singly occupied orbitals have the same spin. Answer choice C violates Hund's rule because it implies that the 2p orbitals are not filled correctly by occupying each orbital singly before doubling up.
Transcribed Image Text:**Question:** Which electron configuration violates Hund's rule? **Options:** A) \[ \text{[He]}2s^22p_x^22p_y^22p_z^1 \] B) \[ \text{[He]}2s^22p_x^22p_y^12p_z^2 \] C) \[ \text{[He]}2s^22p_x^12p_y^22p_z^2 \] D) \[ \text{[He]}2s^22p_x^22p_y^2 \] E) \[ \text{[He]}2s^22p_x^12p_y^12p_z^2 \] **Explanation:** This question asks which electron configuration does not follow Hund's rule. Hund's rule states that every orbital in a subshell is singly occupied before any orbital is doubly occupied, and all electrons in singly occupied orbitals have the same spin. Answer choice C violates Hund's rule because it implies that the 2p orbitals are not filled correctly by occupying each orbital singly before doubling up.
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