Which of the following statements is true concerning the electron configuration [Xe]6p²? A) This configuration cannot be the ground-state electron configuration for a Ba atom because it violates the Pauli exclusion principle. B) This configuration cannot be the ground-state electron configuration for a Ba atom because it violates Hund's rule. C) This configuration is the ground-state electron configuration for a Ba atom. D) This configuration cannot be the ground-state electron configuration for a Ba atom because it violates the Heisenberg uncertainty principle. E) This configuration cannot be the ground-state electron configuration for a Ba atom because it violates the Aufbau principle.

Question

Quizplus · Accepted Answer

The electron configuration [Xe]6p² violates the Aufbau principle, which states that electrons fill the lowest available energy level first before moving to higher levels. Ba (atomic number 56) has a ground-state electron configuration of [Xe]6s2.

Which of the Following Statements Is True Concerning the Electron