MCQ
In potassium atom, electronic energy level is in the following order
  • A
    $4s > 3d$
  • B
    $4s < 2p$
  • $4s < 3d$
  • D
    $4s > 4p$

Answer

Correct option: C.
$4s < 3d$
c
The $'4s'$ orbital is having lower energy than $'3d'$ orbital

The $(n+1)$ Value of $'4s'$ orbital is lower than that of $'3d'$ orbital.

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