1a)Look at figure 18-3 from the reading (shown below). Which electronic transition in formaldehyde will correspond to a shorter wavelength of light?n--->pi* or pi--->pi* b)Match the the following defintion with the correct three choices, each deifntion is only used once: Absorbance, Phosphorescence, and Fluorescence -occurs at a wavelength between the two other processes  -occurs at the longest wavelength  -occurs at the shortest wavelength

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Q: C9H16 4000 3500 3000 2500 2000 1500 1000 500 001 08 09 TRANSMITTANCE [%]

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Quantum Chemistry

Quantum chemistry deals with the properties of chemical systems and their reactions. The branch of chemistry which is more concerned with quantum chemistry is physical chemistry. It is a more sophisticated field of theoretical physics which is concerned towards the application of physical concepts towards various chemical aspects such as, formation of atoms, chemical structure descriptions, chemical bond strength, hybridization, conjugation etc. Quantum chemistry mainly studies the various states i.e., ground state, excited state, transition states of the individual atoms or molecules taking place during any chemical reaction. The laws of motion explained by various scientists, which are termed as “classical mechanics” were not acceptable in terms of electrons, protons, atoms, light etc. Thus, a new theory named “quantum mechanics” emerged to understand the basic framework of various atomic and subatomic particles.