Most versions of this work are divided into two variants, each containing:
: Writing the full and abbreviated electronic formulas for specific elements (e.g., Phosphorus or Calcium). Most versions of this work are divided into
: Trends in the Periodic Table, such as changes in atomic radius, electronegativity, and metallic/non-metallic properties across periods and groups. such as changes in atomic radius
: When an atom becomes a cation (positive ion), it loses electrons; an anion (negative ion) gains them. it loses electrons