1. H + H → H:H or H—H (Single Bond)
2. F + F → F:F or F—F (Single Bond)
3. O + O → O::O or O=O (Double Bond)
4. N + N → N:::N or N≡N (Triple Bond)
5. B + F → F:B:F or F—B—F (Single Bonds; note: Boron often forms 3 bonds, so this might imply BF₃ with three F atoms, but for two atoms shown, it's a single bond with incomplete octet for B)
6. S + H → H:S:H or H—S—H (Single Bonds; note: Sulfur typically forms two bonds in H₂S)
7. O + C + O → O::C::O or O=C=O (Double Bonds)
8. C + H → H:C:H or H—C—H (Single Bonds; note: Carbon typically forms four bonds, so this might imply CH₄ with four H atoms, but for one C and one H shown, it's a single bond with incomplete octet for C)
9. H + O + H → H:O:H or H—O—H (Single Bonds)
10. O + B + O → O::B::O or O=B=O (Double Bonds; note: Boron often forms 3 bonds, so this might imply BO₃³⁻ or similar, but for two O atoms shown, it's double bonds with incomplete octet for B)
Parent Tip: Review the logic above to help your child master the concept of covalent bonds worksheet.