Covalent Bond Formation — Methane (CH₄)
Interactive Chemistry Simulation — Sharing of Electron Pairs between Carbon and Hydrogen
🔗 What is a Covalent Bond?
A covalent bond forms when two atoms share a pair of valence electrons (one electron from each atom). Unlike ionic bonds, no electrons are transferred — both atoms hold onto the shared pair together.
⚛️ Electron Configuration
📝 Reaction
Carbon has 4 valence electrons and needs 4 more to complete its octet. Each hydrogen has 1 valence electron and needs 1 more for a duplet. Each bond = 1 shared pair of electrons.
📐 Shape of Methane
CH₄ has a tetrahedral shape. The four hydrogen atoms are arranged around the central carbon at a bond angle of 109.5°, keeping the shared pairs as far apart as possible.
💨 Properties of Covalent Compounds
- Low melting and boiling points
- Do not conduct electricity
- Generally insoluble in water
- Methane is a colorless, odorless, flammable gas
💡 Key Idea
Covalent bonding is about sharing, not transferring! Carbon shares one electron with each hydrogen, so each hydrogen achieves a stable duplet (2) and carbon achieves a stable octet (2, 8).
About This Chemistry Simulation
Watch carbon share its 4 valence electrons with 4 hydrogen atoms, forming four covalent bonds and the methane molecule.