Specification Point 1.46:
Understand how to use dot-and-cross diagrams to represent covalent bonds in: • diatomic molecules, including hydrogen, oxygen, nitrogen, halogens and hydrogen halides • inorganic molecules including water, ammonia and carbon dioxide • organic molecules containing up to two carbon atoms, including methane, ethane, ethene and those containing halogen atoms
Covalent Compound: Compound with bonds between Non-Metal and Non-Metal formed by the shared pair of electrons between the two atoms
DOT-AND-CROSS DIAGRAMS OF DIATOMIC MOLECULES:
DOT-AND-CROSS DIAGRAMS OF INORGANIC MOLECULES:
DOT-AND-CROSS DIAGRAMS OF ORGANIC MOLECULES:
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Jamie got a First class degree in Chemistry from Oxford University before going on to teach chemistry full time as a professional tutor. He’s put together these handy revision notes to match the Edexcel IGCSE Chemistry specification so you can learn exactly what you need to know for your exams.
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