Question

Which of the following electronic transition required minimum energy?
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Answer 1

Answer:

The energy requirement order for excitation for different transitions is as follows. n→∏* transition requires lowest energy while σ→σ* requires highest amount of energy. n→π* transition requires lowest energy due to longer wavelength.

Answer 2

The energy requirement request for excitation for various changes is as per the following.

• n→∏* change requires most minimal energy while σ→σ* requires a most noteworthy measure of energy. n→π* change requires most minimal energy because of longer frequency.
• As the energy level builds, the energy hole diminishes logically. Thus, the most extreme energy for electron change is required when the electron bounces from n=1 to n=2.
• ΔE1>ΔE2 and thusly the first transition would require the main measure of energy input.
• Assign the electrons to the energy levels in different ways until you observe an assignment that concurs with analysis.
• Whenever there is an even number of electrons, the lowest-energy progress is the energy difference between the most elevated involved level (HOMO) and the lowest unoccupied level (LUMO).