Question

The necessary steps required to show the formation of $ CC{l_4} $ by Lewis electron dot diagram has been jumbled. Arrange them in a sequence.
(a) Thus, an electron pair is shared between $ C $ and $ Cl $ . This is the Lewis electron dot diagram for $ CC{l_4} $ ​.
(b) Write the symbol of chlorine and represent its valence electrons with the help of crosses, that is,
(c) Write the symbol of carbon and represent its valence electrons with the help of dots, that is,
(d) When carbon combines with four chlorine atoms, the carbon atom contributes four electrons for sharing whereas each chlorine atom contributes only one electron for sharing. Thus, both the atoms in $ CC{l_4} $ attain an octet.
(A) acbd
(B) bacd
(C) dcba
(D) cbda

Answer 1

Hint : Also called tetrachloromethane, it is often classified as a polyhalogenated organic compound it is called so as it has a carbon atom attached to more than one halide functional group. It exists as a colourless liquid and has a very sweet odour. It is thus often used in cleaning agents and in fire extinguishers.

Complete Step By Step Answer:
It is also used widely as a precursor to chlorofluorocarbons. Exposure to carbon tetrachloride may cause centrilobular hepatic necrosis. A reaction occurs in the body where this compound is metabolized into the trichloromethyl radical. This is very highly reactive. This trichloromethyl can go on to cause hepatocellular damage.
Its structure has tetrahedral molecular geometries where the central atom is carbon. This central atom carbon is bonded to four chlorine atoms. These chlorine atoms are positioned symmetrically at each corner and central carbon atom in the $ CC{l_4} $ molecule. The bonds which are formed between the carbon and chlorine atoms are covalent. These bonds cause this molecule to show non-polar properties. Its molar mass is $ 153.81 $ grams per mole. Under standard conditions, this compound exists in the liquid state. It is not very soluble in water but is soluble in many organic solvents that include benzene, ether, alcohol and formic acids. Carbon tetrachloride crystallization occurs and it turns into a monoclinic crystal lattice. The coordination geometry of this compound has a tetrahedral shape and thus the molecular shape is also tetrahedral of this compound.
For the structure of $ CC{l_4} $ , we know that 4 electrons of carbon are shared with $ 4 $ atoms of chlorine. Each chlorine atom shares one electron with carbon. Hence the Lewis dot structure is shown in figure above.
Thus the answer is $ D $ .

Note :
However, the use of this compound has been restricted by several governments as it is very toxic for humans. When we inhale large quantities of carbon tetrachloride, it can cause serious damage to vital organs like the kidney and liver. It can also have negative effects on the central nervous system.