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Sum and structural formulae - The designation of the halogen derivatives of hydrocarbons is analogous to the designation of branched hydrocarbons. - Arabic numerals indicate the position of the halogen atoms in the molecule. - Greek numerals indicate the number of halogen atoms. - The name of the atom is included as a part of speech. - This is followed by the name of the underlying carbon chain. Example 1,2-dichloropropane: This is a derivative of propane - chemistry solver . The carbon chain consists of three carbon atoms that are connected by single bonds. At the first and second carbon atom, a hydrogen atom has been replaced by a chlorine atom. Sum and structural formulae There are different ways to describe organic molecules with formulae. The sum formula only shows the stoichiometric composition - do my homework . Structural and stereo formulae show how the individual atoms in the molecule are connected to each other. Fischer projection, Haworth notation and skeleton formulae are special ways of representing organic molecules. Chemical formulae For the chemist it is important to describe compounds or particles in a shortened form or their spatial arrangement. Depending on what information was needed about the particle structure, different types of chemical formulae developed over time. With the different formulae, either only the stoichiometric composition or also the complete spatial structure of a molecule can be modelled - do my math homework for me . In the order sum formula → structural formula → stereo formula, the information content but also the degree of difficulty of the representation increases. Read more: Parliamentarism Percentage calculation, basic equation Discounts, calculate Sommerfeld and quantum physics Gaining knowledge in chemistry
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