The energy level diagram for hydrogen The ionization energy of hydrogen is
A) 1.5 eV.
B) 1.9 eV.
C) 3.4 eV.
D) 10.2 eV.
E) 13.6 eV.

Question

The energy level diagram for hydrogen  The ionization energy of hydrogen is
A) 1.5 eV. 
B) 1.9 eV. 
C) 3.4 eV. 
D) 10.2 eV. 
E) 13.6 eV.

Quizplus · Accepted Answer

The ionization energy of hydrogen is the energy required to remove the electron from the ground state (n=1) to infinity. In the energy level diagram for hydrogen, the energy required to reach infinity is equal to the energy difference between the n=1 level and the top of the diagram, which is 13.6 eV (corresponding to the transition from n=1 to n=infinity). Therefore, the correct answer is E) 13.6 eV.

The Energy Level Diagram for Hydrogen the Ionization Energy