. The electronic configuration of four elements are given below
Which elements does not belong to the same family as others?
(a) [Xe]4f145d104s2
(b) [Kr]4d105s2
(c) [Ne]3s23p5
(d) [Ar]3d104s2
Best Answer
Correct Option is: (C)
Because each of the elements (a), (b), and (d) has two electrons in its valence shell, they belong to the same group. Element (c), on the other hand, contains seven electrons in its valence shell and hence belongs to another group.
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