Name the German chemist who classified the elements using the physical properties such as melting point, boiling point, atomic volume, etc.

Explanation

To answer the question, we will follow these steps:

### Step 1: Identify the Chemist
The question specifically asks for the name of a German chemist who classified elements based on physical properties.

### Step 2: Recall Relevant Information
From the knowledge of chemistry, we know that Lothar Meyer was a significant figure in the classification of elements. He is known for his work in the late 19th century.

...