Punjab board Organic Chemsitry Unit 11 chemistry Notes Class 10th Short, long questions, multiple-choice questions, and MCQs.
Explain the types of formulae of organic compounds
There are four types of formulae of organic compounds:
(i)Molecular formula
(ii) Structural formula
(iii) Condensed formula
(iv) Dot and cross formula
(i) Molecular Formula
The formula which represents the actual number of atoms in one molecule of the organic compound is called the molecular formula. For example, the molecular formula of butane is Gallo. It shows:
(a) Butane is made up of carbon and hydrogen atoms.
(b) Each molecule of butane consists of 4 carbon atoms and 10 hydrogen atoms.
(II) Structural Formula
The structural formula of a compound represents the exact arrangement of the different atoms of various elements present in a molecule of a substance.
In a structural formula, a single bond is represented by a single line (—). a double bond by two lines (=) and a triple bond by three lines (w) between the bonded atoms.
