Why atoms share electrons to achieve chemical stability
In short: Understand the fundamental mechanics of covalent bonding. This video breaks down how non-metal atoms share electrons to complete their outer shells, moving from basic dot and cross diagrams to complex 3D molecular structures.
Covalent bonding occurs when non-metal atoms share electrons to reach a stable configuration with a full outer shell. The lesson distinguishes these bonds from ionic bonding and categorizes covalent substances into two main types: simple molecules like water and methane, and larger structures such as polymers or giant covalent networks like diamond and graphite.
The video provides practical techniques for visualizing these connections, including dot and cross diagrams, displayed formulas using lines, and 3D models. It features a specific worked example on how to represent the covalent bonds within an ammonia molecule.
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Sources
- Summary by Intellect · source: GCSE Chemistry - Covalent Bonding - Formation | Drawing Covalent Bonds (2027/28 exams)
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