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Q.

he electronic configuration of the element which is just above the element with atomic number 43 in the same periodic group is

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a

1s22s22p63s23p63d54s2

b

1s22s22p63s23p63d104s24p5

c

1s22s22p63s23p63d64s1

d

1s22s22p63s23p63d104s14p6

answer is A.

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Detailed Solution

Mn25−[Ar]3d54s2.∵43 belongs to 4th period918 elements), the atomic no. of the element above it = 43-18=25
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