Which scientist is associated with the development of the periodic table?

Which scientist is associated with the development of the periodic table?

• A. Curie
• B. Mendeleev
• C. Lavoisier
• D. Newton

Answer: (B)

The main idea here is how elements are arranged to reveal patterns in their properties. Dmitri Mendeleev is the scientist who first organized a practical version of the periodic table, showing that elements with similar chemical behaviors appear at regular intervals when arranged by increasing atomic weight. He went further by leaving blank spots for elements that hadn’t been discovered yet and even predicted their properties, demonstrating the predictive power of a periodic arrangement. This approach captured the recurring trends in elements—what we call periodicity—which underpins why the table works so well for understanding chemical behavior. While the other scientists listed made significant contributions in different areas, they aren’t associated with creating the periodic table framework.

The main idea here is how elements are arranged to reveal patterns in their properties. Dmitri Mendeleev is the scientist who first organized a practical version of the periodic table, showing that elements with similar chemical behaviors appear at regular intervals when arranged by increasing atomic weight. He went further by leaving blank spots for elements that hadn’t been discovered yet and even predicted their properties, demonstrating the predictive power of a periodic arrangement. This approach captured the recurring trends in elements—what we call periodicity—which underpins why the table works so well for understanding chemical behavior. While the other scientists listed made significant contributions in different areas, they aren’t associated with creating the periodic table framework.