If the binding energy of the electron in a hydrogen atom is

Question:

If the binding energy of the electron in a hydrogen atom is $13.6 \mathrm{eV}$, the energy required to remove the electron from the first excited state of $\mathrm{Li}^{++}$is :

  1. $13.6 \mathrm{eV}$

  2. $30.6 \mathrm{eV}$

  3. $122.4 \mathrm{eV}$

  4. $3.4 \mathrm{eV}$


Correct Option: , 2

Solution:

B.E. = 3.4 × 9 = 30.6 eV

Leave a comment

Close

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