in a potassium atom electronic energy levels are


In a potassium atom, electronic energy levels are in the following order:

(1) 4s>3d                             

(2) 4s>4p             

(3) 4s< 3d                           

(4) 4s<3p

Ans: 4s< 3d

 

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Chemistry: in a potassium atom electronic energy levels are
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