Which of the following represents the change in electronic configuration that is associated with the first ionization energy of strontium? A)[Kr]5s¹5p¹ → [Kr]5s¹ + e^- B)[Kr]5s² → [Kr]5s¹5p¹ C)[Kr]5s² → [Kr]5s¹ + e^- D)[Kr]5s² + e^- → [Kr]5s²5p¹

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The first ionization energy of strontium involves the removal of one electron from the 5s orbital. Option C shows this by indicating the loss of one electron from the 5s orbital to form a Sr+ ion with electronic configuration [Kr]5s^2 → [Kr]5s^1 + e^-. Options A and B show electron removal from other orbitals, and option D shows the addition of an electron to the 5p orbital, which is not involved in the first ionization energy of strontium.

Which of the Following Represents the Change in Electronic Configuration