Q. Excited pigment molecule shifts an electron in an outer orbit having

Options

A. a) Less energy
B. b)
More energy
C. c) Lesser spin
D. d) More spin.

Answer

To solve the question regarding the excited pigment molecule and the shift of an electron in an outer orbit, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Pigment Molecules**: Pigment molecules, such as chlorophyll, are essential in the process of photosynthesis. They absorb light energy, which excites electrons within the molecule.

2. **Excitation of Electrons**: When a pigment molecule absorbs light energy, it causes an electron to become excited and move to a higher energy level or outer orbit. This process is crucial for the conversion of light energy into chemical energy.

3. **Energy Levels**: In atomic and molecular physics, electrons occupy specific energy levels. When an electron is excited, it moves from a lower energy level to a higher energy level.

4. **Photosystems in Photosynthesis**: In photosynthesis, there are two main photosystems: Photosystem I (PSI) and Photosystem II (PSII). PSI absorbs light at a wavelength of 700 nm, while PSII absorbs light at 680 nm.

5. **Energy Transfer**: The energy absorbed by these photosystems is transferred from lower energy states (like that of PSII) to higher energy states (like that of PSI). This means that when an electron is excited, it is moving to a state of higher energy.

6. **Conclusion**: Based on the understanding of how excited electrons behave in pigment molecules during photosynthesis, we conclude that when an excited pigment molecule shifts an electron in an outer orbit, it is moving to a state with more energy.

### Final Answer:
The correct option is **B) more energy**.

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