Periodic Table Overview - 2018

General Structure

• Groups and Periods:
  • Main groups labeled as 1A - 8A (or IA - VIIIA)
  • Transition metals labeled as 3B - 2B (or IIIB - IIB)
  • Lanthanide and Actinide series included

Key Information

• Elements by Atomic Mass: Elements listed with atomic masses, e.g., Hydrogen (1.008), Helium (4.003), etc.
• Notable Blocks:
  • Alkali Metals: Group 1A
  • Alkaline Earth Metals: Group 2A
  • Transition Metals: Groups 3 - 12
  • Basic Metals, Semimetals, Nonmetals
  • Halogens: Group 17
  • Noble Gases: Group 18
  • Lanthanides and Actinides: Separate from main table

Elements Breakdown

• Major Elements:
  • Metals: Potassium, Calcium, Scandium, Titanium, etc.
  • Nonmetals: Hydrogen, Carbon, Nitrogen, Oxygen, etc.
  • Metalloids: Boron, Silicon, Germanium, etc.
  • Noble Gases: Helium, Neon, Argon, Krypton, Xenon, Radon

Special Categories

• Lanthanide Series (elements 57-71)
• Actinide Series (elements 89-103)

Atomic Number & Mass

• Numbering System: Elements listed with atomic numbers and atomic masses for quick reference.
• Symbol Key: Each element denoted by a unique symbol and atomic number.

Periodicity and Trends

• Periodic Trends:
  • Atomic Size
  • Ionization Energy
  • Electron Affinity
  • Electronegativity

Elemental Classification

• Classification Types:
  • Alkali Metals
  • Alkaline Earth Metals
  • Transition Metals
  • Basic Metals
  • Semimetals (Metalloids)
  • Nonmetals
  • Halogens
  • Noble Gases
  • Lanthanides
  • Actinides

Additional Notes

• Source: Information provided by Todd Helmenstine, sciencenotes.org, 2018.
• Visual Representation: Reflects a muted color scheme for visual clarity on the periodic table.

This summary provides a comprehensive overview of the periodic table as presented in the 2018 version by Todd Helmenstine, highlighting key elements, their groupings, and periodic trends.