In 1869, mendeleev created a periodic table in which elements were ordered by weight and placed in groups based on their chemica
l properties. mendeleev's decision to design the periodic table in this way allowed immediate advances in chemistry by.? a.) providing an explanation for the reactive properties of the alkali metals b.) providing a framework for models of electron configurations c.) predicting the existence of a group of undiscovered inert gases d.) predicting the properties of undiscovered elements in specific atomic weight ranges. please explain
