Get the periodic table PDF with the most recent atomic mass values of the elements and the highest number of significant figures, per the IUPAC. There you can find the metals, semi-conductor(s), non-metal(s), inert noble gas(ses), Halogens, Lanthanoides, Actinoids (rare earth elements) and transition metals. This fact-filled periodic table is black and white for ease of reading and printing. It was, however, several years after Mendeleev died before the several discrepancies with the atomic masses could be explained, and before the reasons behind the repetition of chemical properties could be fully explained. Please note that the elements do not show their natural relation towards each other as in the Periodic system. Element number 101, synthesized in 1955, is named mendelevium after the founder of the periodic table. The unity for atomic mass is gram per mol. The lightest chemical element is Hydrogen and the heaviest is Hassium. The atomic masses on the periodic table take these isotopes into account, weighing them based on their abundance in nature more weight is given to the isotopes that occur most frequently in nature. Generally, this number is the one with the decimal point. The chemical elements ofįor chemistry students and teachers: The tabular chart on the right is arranged by Atomic mass (weight). The table has mass, or molar mass, shown as the number in the bottom of each square. This list contains the 118 elements of chemistry. Plant Inspection & Process OptimalisationĬhemical elements listed by atomic mass The elemenents of the periodic table sorted by atomic massĬlick on any element's name for further information on chemical properties, environmental data or health effects.
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