MCQOPTIONS
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MCQOPTIONS
| 1. |
Which of the following is an incorrect statement? |
| A. | First step in photochemistry is excited state (photoexcitation) |
| B. | Photochemical reactions are caused by absorption of ultraviolet only |
| C. | When a molecule or atom in the ground state (S<sub>0</sub>) absorbs light, one electron is excited to a higher orbital level |
| D. | it is possible for the excited state S<sub>1</sub> to undergo spin inversion |
| Answer» C. When a molecule or atom in the ground state (S<sub>0</sub>) absorbs light, one electron is excited to a higher orbital level | |