Question

Number of angles of ${\text{10}}{{\text{9}}^{\text{o}}}{\text{2}}{{\text{8}}^{\text{'}}}$ is present in ${\text{CC}}{{\text{l}}_{\text{4}}}$?
A. 2
B. 4
C. 6
D. 8

Answer 1

Hint: In Carbon tetrachloride the 4 Chlorine atoms are arranged symmetrically around the Carbon in a tetrahedral geometry and are bonded to central carbon atom through single covalent bonds,${\text{CC}}{{\text{l}}_{\text{4}}}$ is non- polar in nature.

Complete step by step answer:
The angle between 2 bonds that originate from the same atom in the covalent species is called bond angle.
In ${\text{CC}}{{\text{l}}_{\text{4}}}$ all the 4 ${\text{Cl}}$ atoms are linked to Carbon atom and thus there are 6 bond angles of ${\text{10}}{{\text{9}}^{\text{o}}}{\text{2}}{{\text{8}}^{\text{'}}}$ in ${\text{CC}}{{\text{l}}_{\text{4}}}$.
i.e., $\angle {\text{1}}{{\text{C}}_{\text{2}}}{\text{ = }}\angle {\text{2}}{{\text{C}}_{\text{3}}}{\text{ = }}\angle {\text{1}}{{\text{C}}_{\text{4}}}{\text{ = }}\angle {\text{2}}{{\text{C}}_{\text{3}}}{\text{ = }}\angle {\text{2}}{{\text{C}}_{\text{4}}}{\text{ = }}\angle {\text{3}}{{\text{C}}_{\text{4}}}{\text{ = 10}}{{\text{9}}^{\text{o}}}{\text{2}}{{\text{8}}^{\text{'}}}$.

So, the correct answer is Option C.

Additional information:
In the molecular geometry of Carbon tetrachloride, carbon is bonded to 4 Chlorine atoms and according to Valence shell electron pair repulsion theory, they will have a tetrahedral geometry. Carbon tetrachloride is a clear, volatile, colourless solid which is a stable chlorinated hydrocarbon. Carbon tetrachloride was formerly used as fire extinguishers. They have got a molar mass of ${\text{153}}{\text{.81 g/mol}}$ with a melting and boiling point of ${\text{ - 22}}{\text{.9}}{{\text{2}}^{\text{o}}}{\text{C}}$ and ${\text{76}}{\text{.7}}{{\text{2}}^{\text{o}}}{\text{C}}$. They are soluble in ether, chloroform, formic acid, alcohol and benzene. Carbon tetrachloride has the ability to dissolve iodine. They are present as dense nonaqueous phase liquid if some amount is spilled in the environment and has a specific gravity greater than 1.
Carbon tetrachloride can be mainly produced from methane
${\text{C}}{{\text{H}}_{\text{4}}}{\text{ + 4C}}{{\text{l}}_{\text{2}}}\xrightarrow{{}}{\text{CC}}{{\text{l}}_{\text{4}}}{\text{ + 4HCl}}$

Note: Carbon tetrachloride has many advantages like, it could be used as refrigerant and even as a dry- cleaning agent and they are used as solvents for fats and oils. Inhalation of vapours of Carbon tetrachloride can cause depression in the central nervous system and can also degenerate kidneys and liver.