Question

An organic molecule can be represented by which of the following formula?

• A. Condensed Formula
• B. Bond Line Formula
• C. Molecular Formula
• D. Expanded Formula

Answer 1

Answer: (A), (B), (C), (D)

Expanded Formula

An organic formula can be represented by molecular formula, condensed formula, expanded formula as well as bond line formula.
Theory :
Representation of organic molecules :
1. Molecular Formula
2. Structural Formula
2.1 Expanded Formula 2.2 Condensed Formula
3. Bond line formula
Molecular formula :
A molecular formula consists of the chemical symbols for the constituent elements followed by numeric subscripts describing the number of atoms of each element present in the molecule.
Expanded formula :
Expanded structural formula shows all of the bonds connecting all of the atoms in the compound.
Example: Below is the expanded structure of propane

Condensed formula :
Omit some or all of the dashes representing the covalent bonds.Indicate the number of identical groups attached to an atom by a subscript
Example
$C{H}_{3}C{H}_{2}C{H}_3$ is the condensed structure of propane

Bond line formula :
1. Representation of organic compounds where C and H atoms are not shown.
2. Lines representing $C-C$ bonds are drawn in a zig-zag fashion.
3. Terminal atoms are carbon unless indicated otherwise by $O,N,Cl$ etc.
Example:
Bond line structure of propane is :