- CH₄: Carbon is central atom with 4 single bonds to H atoms. No lone pairs on C. Total valence electrons: 8.
- NH₃: Nitrogen is central atom with 3 single bonds to H atoms and 1 lone pair. Total valence electrons: 8.
- O₂: Two O atoms connected by a double bond, each with 2 lone pairs. Total valence electrons: 12.
- HCl: H bonded to Cl by a single bond. Cl has 3 lone pairs. Total valence electrons: 8.
- C₂H₄: Two C atoms connected by a double bond, each bonded to 2 H atoms. No lone pairs on C. Total valence electrons: 12.
- OH⁻: O bonded to H by a single bond, O has 3 lone pairs, and the structure carries a -1 charge. Total valence electrons: 8.
- H₂S: S is central atom with 2 single bonds to H atoms and 2 lone pairs. Total valence electrons: 8.
- CO₂: C is central atom with double bonds to two O atoms. Each O has 2 lone pairs. No lone pairs on C. Total valence electrons: 16.
- H₂: Two H atoms connected by a single bond. Total valence electrons: 2.
Parent Tip: Review the logic above to help your child master the concept of lewis dot structure practice worksheet.
