The 71st electron of an element X


The $71^{\text {st }}$ electron of an element $X$ with an atomic number of 71 enters into the orbital :

  1. $4 \mathrm{f}$

  2. $6 p$

  3. $6 \mathrm{~s}$

  4. $5 \mathrm{~d}$

Correct Option: 1


(1) 4f

Leave a comment


Click here to get exam-ready with eSaral

For making your preparation journey smoother of JEE, NEET and Class 8 to 10, grab our app now.

Download Now