Which of the following processes describe the way excited molecules can return t

Question

Which of the following processes describe the way excited molecules can return to their ground state?

1) They can return via radiationless dissipation of energy.

2) They can lose this energy as a different wavelength of light in a process known as fluorescence.

3) They can transfer this energy to adjacent molecules in a process known as resonance transfer.

4) They can transfer an excited electron to a nearby molecule with a slightly lower excited state in a process known as electron transfer.

Statements 1, 2, and 3 are true.

Statements 2 and 4 are true.

Statements 1, 2, and 4 are true.

All of the listed statements are true.

Explanation / Answer

When a molecule absorbs energy in the form of a photon then it gets promoted from the ground state higher-energy excited state. However, the molecule tends to return to the ground state and there are various ways through which they will reach to the ground state:

Therefore, the correct answer is : Statements 1, 2, and 3 are true.

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