MCQ
Which is incorrect configuration for s-block elements?
- A[Ar]3d104s2
- B[Ar]3d104s1
- CBoth A and B
- DNone of these
✓
Answer
- Both A and B
Explanation:
[Ar]3d104s2 - Last filling electron is in 3d.
[Ar]3d104s1 - Last filling electron is in 3d.
Thus, both are d-block element.
[Ar]4s1−2 is a configuration of s-block.
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