Answer:
- 3.4 eV
Explanation:
Energy of a particular orbital of hydrogen is the binding energy .
Energy of any orbital of hydrogen in terms of eV is given by
[tex]E_n=-\frac{13.6}{n^2}[/tex]
[tex][tex]E_1=-\frac{13.6}{1^2}[/tex][/tex]
[tex][tex]E_2=-\frac{13.6}{2^2}[/tex][/tex]
[tex][tex][tex]E_2= -3.4 eV.[/tex]