1. Electron dot structures for the elements:
- Calcium (Ca): Ca with two dots (one on each side, or both on one side)
- Oxygen (O): O with six dots (two on each of three sides, or one on each side with two on one side)
- Sulfur (S): S with six dots (two on each of three sides, or one on each side with two on one side)
- Lithium (Li): Li with one dot
- Boron (B): B with three dots
- Fluorine (F): F with seven dots (two on each of three sides, and one on the fourth side)
- Xenon (Xe): Xe with eight dots (two on each of four sides)
- Sodium (Na): Na with one dot
- Magnesium (Mg): Mg with two dots
2. Lewis structures for the molecules:
- Cl₂: Cl–Cl with three lone pairs on each Cl
- SO₂: Central S atom double bonded to two O atoms, with one lone pair on S and two lone pairs on each O
- NH₃: Central N atom single bonded to three H atoms, with one lone pair on N
- H₃O⁺: Central O atom single bonded to three H atoms, with one lone pair on O and a positive charge
- C₂H₆: Two C atoms single bonded to each other, each C bonded to three H atoms
- CH₂Cl₂: Central C atom bonded to two H atoms and two Cl atoms, with no lone pairs on C
Parent Tip: Review the logic above to help your child master the concept of lewis structure practice worksheet.
