Which of the following statements would explain the fact that larger molecules, such as amino acids, do not produce spectral lines in the OBABFGKM classification?
1) Larger molecules have more complex energy levels that do not result in discrete spectral lines.
2) Larger molecules have fewer energy levels, leading to a lack of spectral lines.
3) Larger molecules are not capable of emitting or absorbing light.
4) Larger molecules have energy levels that are outside the visible spectrum.