Which one of the following statements about the line emission spectrum for atomic hydrogen is incorrect?
Electromagnetic radiation is emitted when the electron jumps back to a lower energy level.
Electromagnetic radiation is emitted when the electron is promoted to a higher energy level.
In the visible region of the spectrum the electron returns to the n = 2 energy level.
The electron can only move between fixed energy levels.
Electromagnetic radiation is emitted when the electron is promoted to a higher energy level.
Only when electrons jump back to lower energy level from higher energy levels electromagnetic radiations are radiated.