Question

The following question relates to the partial energy level diagram for the hydrogen electron:
$.54eV$ ____________ $n_5$
$.85eV$ ____________ $n_4$
$1.51eV$ _________ $n_3$
$3.4eV$ ____________ $n_2$
$13.6eV$ ____________ $n_1$
The question relates to a hydrogen electron located at $E_3$.What is the emission energy when the electron falls to $E_5$ from $E_3$?

• A. $\pm .66eV$
• B. $\pm .966eV$
• C. $\pm .1.89eV$
• D. $\pm 10.2eV$
• E. $\pm 12.09eV$

Answer 1

Answer: (B)

$\pm .966eV$

Energy is released when an electron jumps from a higher energy level to a lower energy level, and released energy is the difference in the total energy of the two energy levels.

$\Delta E=E_{n_1}-E_{n_2}=E_5-E_3=\pm (0.54-1.51)=\pm 0.996eV$