- Cl₂: :Cl — Cl: with three lone pairs on each Cl atom.
- O₂: :O=O: with two lone pairs on each O atom.
- N₂: :N≡N: with one lone pair on each N atom.
- HCN: H—C≡N: with one lone pair on N.
- HBr: H—Br: with three lone pairs on Br.
- HI: H—I: with three lone pairs on I.
- H₃O⁺: Central O bonded to three H atoms, with one lone pair on O; overall +1 charge.
- O₃: Central O single-bonded to one O and double-bonded to another; single-bonded O has three lone pairs and -1 charge, double-bonded O has two lone pairs, central O has one lone pair and +1 charge.
- PCl₃: Central P bonded to three Cl atoms, with one lone pair on P; each Cl has three lone pairs.
- CO₂: O=C=O with two lone pairs on each O atom.
- CHCl₃: Central C bonded to one H and three Cl atoms; each Cl has three lone pairs.
- SiH₄: Central Si bonded to four H atoms; no lone pairs on Si.
- SO₃: Central S double-bonded to three O atoms; each O has two lone pairs. (Resonance structures exist, but this is the most stable form with formal charges minimized).
- NO₃⁻: Central N double-bonded to one O and single-bonded to two O atoms; single-bonded O atoms have three lone pairs and -1 charge each; overall -1 charge.
- CCl₄: Central C bonded to four Cl atoms; each Cl has three lone pairs.
Parent Tip: Review the logic above to help your child master the concept of bonding worksheet 5 lewis structures.
