Q. The required energy to detach one electron from Balmer series of hydrogen spectrum is
A) 13.6 eV
B) 10.2 eV
C) 3.4 eV
D) $- 1.5\ eV$
Explanation
(c) In Balmer series, $n = 2$
$E = \frac{13.6}{2^{2}} = 3.4\ eV$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.