Questions: Question 5 2 pts Consider the emission spectrum for the element neon ( Ne ). If the amount of energy imparted to the Ne sample is increased: The positions of the emission lines present will shift to longer wavelengths. The positions of the emission lines present will change randomly. The positions of the emission lines present will shift to shorter wavelengths. The positions of the emission lines present will not change. The emission lines will disappear.

Solution Steps

The emission spectrum of an element is produced when electrons in excited states transition back to lower energy levels, emitting photons of specific wavelengths. Increasing the energy imparted to the sample doesn't change the allowed energy levels or the possible transitions between them. Therefore, the wavelengths of the emitted photons, and hence the positions of the lines in the spectrum, will remain the same. However, the increased energy input will excite a greater number of atoms, resulting in more photons being emitted, increasing the intensity of the lines without changing their position.

The question asks about potential changes to the emission spectral lines if the energy imparted to the sample increases. As explained in the previous step, an increase in energy only affects the number of atoms getting excited, which in turn only impacts the intensity of the lines. It does not affect the wavelengths of the emitted photons, and thus, the positions of lines will remain fixed.

Since the positions of the lines are dependent only upon the discrete energy levels in the atom, and the energy imparted doesn't change these levels, increasing the energy applied will not cause any shifts in the lines, changes in their pattern, or the disappearance of the lines. It merely increases their brightness.

Final Answer: The positions of the emission lines present will not change.