Class (b) metal ion

{
  "id": "MLC-T-CHM-002099",
  "term": "Class (b) metal ion",
  "field": "Chemistry",
  "definition": "A metal ion characterized by its preference for ligands containing sulfur, phosphorus, or heavier halogens as donor atoms, indicating a soft acid character. These ions are typically larger, less charged, and more easily polarized than class (a) metal ions. Examples include copper(I), silver(I), and mercury(II) ions.",
  "subject": "Organic and Biomolecular Chemistry",
  "see_also": [
    "class (a) metal ion",
    "hard acid",
    "ligands"
  ],
  "references": [
    "PAC, 1994, 66, 1077. 'Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994)' on page 1097 (https://doi.org/10.1351/pac199466051077)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/class-b-metal-ion/"
}