Name the scientist who proposed modern periodic law

Explanation

**Step-by-Step Text Solution:**

1. **Understanding the Question**: The question asks for the name of the scientist who proposed the modern periodic law.

2. **Defining Modern Periodic Law**: The modern periodic law states that the physical and chemical properties of elements are a periodic function of their atomic number. This means that as you move through the periodic table, elements with similar properties appear at regular intervals based on their atomic numbers.

3. **Identifying the Scientist**: The scientist who proposed the modern periodic law is Dmitri Mendeleev. He is known for organizing the elements into a periodic table based on their atomic mass and properties, which later evolved into the modern periodic law based on atomic number.

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