Electronic configurations of few elements are given below. Mark the incorrect match.
Chemistry · Class 11 · CBSE — Classification of Elements and Periodicity in Properties
Electronic configurations of few elements are given below. Mark the incorrect match.
- 1s2 2s2 2p5 – Most electronegative element
- 1s2 2s2 2p3 – An element belonging to 3rd period and 5th group
- 1s2 2s2 2p6 3s2 3p6 3d8 4s2 – A d-block element
- 1s2 2s2 2p6 3s2 3p6 – An element from 18th group
Answer
(B) 1 s 2 2 s 2 2 p 3 – An element belonging to 3 rd period and 5 th group
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