Excited pigment molecule shifts an electron in an outer orbit having

Options

A. Less energy
B. More energy
C. Lesser spin
D. More spin.

Answer

To answer the question regarding the excited pigment molecule and the shifting of an electron to an outer orbit, we can break it down into several steps:

### Step-by-Step Solution:

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

2. **Absorption of Radiant Energy**: When a pigment molecule absorbs light (radiant energy), it causes an electron in the molecule to gain energy. This energy absorption is crucial for the process of photosynthesis.

3. **Electron Energy Levels**: Electrons in an atom occupy specific energy levels or orbits. Electrons in lower energy levels (inner orbits) have less energy compared to those in higher energy levels (outer orbits).

4. **Excitation of Electrons**: Upon absorbing light energy, an electron from a lower energy level (inner orbit) becomes excited and moves to a higher energy level (outer orbit). This transition represents an increase in energy.

5. **Result of Excitation**: The excited electron in the outer orbit is now in a state where it can participate in chemical reactions, such as those involved in photosynthesis. This is a critical step in converting light energy into chemical energy.

### Final Answer:
An excited pigment molecule shifts an electron from an inner orbit to an outer orbit, where it has higher energy due to the absorption of radiant energy.

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