Look at the diagram shown below. Name the scientist who created this early attempt at a periodic table.

The early attempt at a periodic table you are referring to is likely the work of Dmitri Mendeleev. He is credited with creating the first widely recognized periodic table in 1869. Mendeleev organized the elements based on their atomic mass and chemical properties, which revealed trends and patterns among the elements. His table not only provided a systematic way to classify elements but also allowed him to predict the existence and properties of elements that had not yet been discovered. This innovative approach laid the foundational framework for the modern periodic table, which is now arranged by atomic number rather than atomic mass. Mendeleev's contributions are vital in the field of chemistry, as they have had a lasting impact on how we understand elemental properties and relationships.