The Periodic Table of Mendeleev. The elements are arranged in Mendeleev's periodic table in groups of related elements. In order to allow for the grouping of specific elements, he left vacant spaces for the atomic masses of the following elements: 44, scandium; 68, gallium; 72, germanium; & 100, technetium.
The periodic table, commonly known as the periodic table of elements, is set up so that scientists may rapidly determine an element's mass, number of electrons, electron configuration, and other distinctive chemical characteristics.
Mendeleev's list of elements had 63 known elements, which were organized in ascending order of atomic weight. He also left room for undiscovered elements for which he anticipated atomic weights.
Mendeleev left spaces in his table for components that weren't yet understood. He may also foretell the characteristics of these unknown elements by examining the chemical and physical characteristics of the elements close to a gap.
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