Explain how discovery of predicted elements supported Mendeleev's table.

In the subtopic Development of the periodic table, this learning objective focuses on explain how discovery of predicted elements supported Mendeleev's table. It sits within The periodic table for AQA GCSE Chemistry 8462, so the explanation must keep the chemistry linked to Development of the periodic table rather than drifting into a nearby idea. Approved keywords to use include Mendeleev, predicted elements. Mendeleev means a chemist who developed the periodic table and rearranged elements based on their chemical properties Avoid the mistake of students often think that Mendeleev's predictions were purely random rather than based on chemical properties; instead, emphasize that Mendeleev used observed chemical properties to predict the existence and properties of undiscovered elements, which later supported his periodic table For exam answers, when studying Mendeleev's periodic table, focus on how the discovery of predicted elements validated his arrangement of elements