MCQ
Which of the following options does not represent ground state electronic configuration of an atom?
- A1s2 2s2 2p6 3s2 3p6 3d8 4s2.
- B1s2 2s2 2p6 3s2 3p6 3d9 4s2.
- C1s2 2s2 2p6 3s2 3p6 3d10 4s1.
- D1s2 2s2 2p6 3s2 3p6 3d5 4s1.
✓
Answer
- 1s2 2s2 2p6 3s2 3p6 3d9 4s2.
Explanation:
Correct electronic configuration of the two subshells (3d and 4s) should be 3d10 4s1.
In certain elements such as Cu or Cr, where the two subshells (4s and 3d) differ slightly in.
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