Valence band

{
  "id": "MLC-T-CHM-012498",
  "term": "Valence band",
  "field": "Chemistry",
  "definition": "The band of allowed electron energies in a solid that lies highest among those completely filled with electrons at absolute zero. Its electrons are the ones that take part in bonding between the atoms. In semiconductors and insulators a band gap, a range of forbidden energies, separates it from the empty conduction band above it, a gap of about 1.1 eV in silicon.",
  "subject": "Organic and Biomolecular Chemistry",
  "see_also": [
    "Fermi level",
    "conduction band",
    "valence"
  ],
  "references": [
    "PAC, 2007, 79, 293. 'Glossary of terms used in photochemistry, 3rd edition (IUPAC Recommendations 2006)' on page 438 (https://doi.org/10.1351/pac200779030293)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/valence-band/"
}