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Periodic Table Elements by Atomic Mass

May 19, 2025

Chemical Elements of the Periodic Table Sorted by Atomic Mass

Overview

  • This content focuses on the periodic table's elements sorted by atomic mass.
  • The list contains all 118 known chemical elements.
  • Each element can be explored further for chemical properties, environmental data, or health effects by clicking on their names.
  • Elements are organized in various ways: by atomic mass, name, symbol, atomic number, etc.

Key Points

  • Atomic Mass is the primary sorting parameter for this list; it is measured in grams per mole.
  • Hydrogen is the lightest element, and Hassium is the heaviest element by atomic mass.
  • The list does not reflect natural relational groupings as in the traditional periodic table (e.g., metals, non-metals, noble gases, etc.).

Notable Categories

  • Metals
  • Non-metals
  • Inert Noble Gases
  • Halogens
  • Lanthanoides
  • Actinoids (Rare Earth Elements)
  • Transition Metals

Example Elements by Atomic Mass

  1. Hydrogen (H) - Atomic Mass: 1.0079
  2. Helium (He) - Atomic Mass: 4.0026
  3. Lithium (Li) - Atomic Mass: 6.941
  4. Beryllium (Be) - Atomic Mass: 9.0122
  5. Boron (B) - Atomic Mass: 10.811
  6. Carbon (C) - Atomic Mass: 12.0107
  7. Nitrogen (N) - Atomic Mass: 14.0067
  8. Oxygen (O) - Atomic Mass: 15.9994
  9. Fluorine (F) - Atomic Mass: 18.9984
  10. Neon (Ne) - Atomic Mass: 20.1797

Additional Resources

  • Molecular Weight Calculator is available for computing molecule weights.

Contact Information

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Copyright

  • © 1998-2025 Lenntech B.V. All rights reserved.

This cheat-sheet serves as a study guide for understanding the organization and properties of the periodic table elements sorted by atomic mass.