MCQ
The electronic configuration of the element which is just above the element with atomic number $43$ in the same periodic group is
  • $1{s^2}\,2{s^2}\,2{p^6}\,3{s^2}\,3{p^6}\,3{d^5}\,4{s^2}$
  • B
    $1{s^2}\,2{s^2}\,2{p^6}\,3{s^2}\,3{p^6}\,3{d^{10}}\,4{s^2}\,4{p^5}$
  • C
    $1{s^2}\,2{s^2}\,2{p^6}\,3{s^2}\,3{p^6}\,3{d^6}\,4{s^1}$
  • D
    $1{s^2}\,2{s^2}\,2{p^6}\,3{s^2}3{p^6}\,3{d^{10}}\,4{s^1}\,4{p^6}$

Answer

Correct option: A.
$1{s^2}\,2{s^2}\,2{p^6}\,3{s^2}\,3{p^6}\,3{d^5}\,4{s^2}$
a
$(a)$ $_{25}Mn - 3{d^5}4{s^2}$.

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