More energy is needed to remove an electron from _.
Correct answer: D. Both A and B
- A. Half filled subshell
- B. Completely Filled Subshell
- C. Partially filled subshell
- D. Both A and B
Explanation
Half-filled subshells and completely filled subshells have a symmetrical distribution of electrons e.g. p3 or p6. p3 is a half-filled subshell but the electron distribution is symmetrical; p6 is a completely filled subshell and electrons here are also distributed symmetrically. The more symmetrical distribution, the more stable the element is so more energy is needed to remove an electron from it. So the answer is D.
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About Electronic Configuration
Electronic configuration describes how electrons occupy shells, subshells and orbitals around an atom. Questions use the Aufbau principle, Pauli exclusion principle and Hund's rule to write configurations, identify valence electrons, form ions and explain periodic trends, including common exceptions such as chromium and copper.
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