Write a brief notes about the rule of nomenclature?
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Answer:
Rules of Nomenclature:
(i) Identify the number of carbon atoms in the compound. A compound having three carbon atoms would have the name propane.
(ii) In case a functional group is present, it is indicated in the name of the compound with either a prefix or a suffix.
(iii) If the name of the functional group is to be given as a suffix, the name of the carbon chain is modified by deleting the final ‘e’ and adding the appropriate suffix. For example, a three-carbon chain with a ketone group would be named in the following manner –Propane – ‘e’ = propan + ‘one’ = propanone.
(iv) If the carbon chain is unsaturated, then the final ‘ane’ in the nameof the carbon chain is substituted by ‘ene’ or ‘yne’. For example, a three-carbon chain with a double bond would be called propene and if it has a triple bond, it would be called propyne.
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Answer:
The universal rules of nomenclature are as follows:
Biological names are in Latin and are written in italics.
The first word in the name indicates the genus, while the second word denotes its specific epithet.
When the name is handwritten, both the words are separately underlined. When printed, the name is in italics.
The first letter of the first word is always written in capital, while the first letter of the specific epithet, i.e. the second word, is a small letter.
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