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Chemical bonds
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Covalent bonds
Covalent bonds are formed between atoms by sharing electrons. In a covalent bond, the difference between the electronegativity of participating atoms is smaller than the ionic bonds. Covalent bonds...
Lewis electron - dot structure
The Lewis electron-dot model is based on the fact that all atoms combine to give compounds in which each atom or ion achieves the noble gas valence electron configuration of s2p6 (or s2 for hydrogen...
Lewis structure exercises
Practise drawing the Lewis structure of molecules using the exercises below. Select answers to see the correct drawings.