The geometrical isomers have ......... but not chemical properties.

Explanation

To answer the question "The geometrical isomers have ......... but not chemical properties," we need to understand the concept of geometrical isomerism in organic chemistry.

### Step-by-Step Solution:

1. **Understanding Geometrical Isomers**:
Geometrical isomers (also known as cis-trans isomers) occur due to the restricted rotation around a double bond or due to the presence of a ring structure. This leads to different spatial arrangements of atoms or groups.

2. **Identifying Properties**:
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