What is the correct structure of 1,2-Dichloropropane?
A. $C{H_3} - CHCl - CHC{l_2}$
B. $C{H_3} - CHCl - C{H_2}Cl$
C. $C{H_3} - CC{l_2} - C{H_3}$
D. $C{H_3} - C{H_2} - CHC{l_2}$

Hint: A chemist specifies the molecular geometry and, where feasible and necessary, the electronic structure of the target molecule or other solid during a chemical structure determination. Complete electronic structure descriptions require identifying the occupation of a molecule's molecular orbitals. Molecular geometry refers to the spatial arrangement of atoms in a molecule and the chemical bonds that hold the atoms together. It can be expressed using structural equations and molecular models. Structure determination can be used on a wide spectrum of compounds, from the simplest to the most complex.

Complete answer:
A chemical nomenclature is a set of principles for naming chemical substances in a systematic way. The International Union of Pure and Applied Chemistry designed and developed the nomenclature that is most often used around the world. The Blue Book and the Red Book, respectively, provide the rules for naming organic and inorganic substances established by the IUPAC. The Green Book, a third volume, defines the guidelines for using symbols for physical quantities, while the Gold Book, a fourth, offers explanations of several technical words used in chemistry. Biochemistry, analytical chemistry, macromolecular chemistry, and clinical chemistry all have similar compendia.


The structure of 1,2-dichloropropane is shown above. The functional group is numbered in such a way that the lowest number is assigned to it.
So, the final answer is option (B) $C{H_3} - CHCl - C{H_2}Cl$ .

Note:
Chemical structure depicts the spatial arrangement of atoms and chemical bonds in a molecule, which dictates the molecular geometry of the compound. Chemists can see a visual depiction of a chemical formula in this way.