The electronic configuration of an element is 1s2 , 2s2 , 2p6 , 3s2 , 3p6 , 3d5 , 4s1. This represents its:
Correct answer: B. Ground state
- A. Excited state
- B. Ground state
- C. Cationic form
- D. Anionic form
Explanation
The electronic configuration 1s2, 2s2, 2p6, 3s2, 3p6, 3d5, 4s1 represents the ground state of chromium. Chromium uniquely adopts this configuration because a half-filled d subshell (3d5) provides extra stability compared to the expected 3d4 4s2. This is not an excited state, as no electrons are in higher energy levels than their ground state configuration permits. It also does not represent a cationic or anionic form since there is no indication of charge.
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