Question

Formation of NaCl is accelerated by which of the following?
(A) Individual octet attainment
(B) High lattice enthalpy
(C) Stabilized solid crystal (FCC)
(D) All of the above.

Answer 1

Hint: NaCl is formed by the combination of sodium and chlorine, where sodium is having atomic number of 11 and chlorine is having atomic number of 17. The bond which is formed between sodium and chlorine is an ionic bond. NaCl is an ionic compound.

Complete Solution :
NaCl is formed when sodium and chlorine combine with each other. NaCl is an ionic solid. The electronic configuration of sodium and chlorine is given below.
Na (Z = 11) - \[1{s^2}2{s^2}2{p^6}3{s^1}\]
Cl (Z = 17) - \[1{s^2}2{s^2}2{p^6}3{s^2}3{p^5}\]

- Na is in excess of one electron to attain inert gas configuration, similarly Cl is less of one electron to obtain inert gas configuration. Therefore, Sodium will transfer its excess one electron to Chlorine which is less than one electron. By this transfer both Na and Cl will attain inert gas configuration. Thus, Na will become \[N{a^ + }\] and Chlorine will become \[C{l^ - }\]. Hence, these both will combine to form NaCl. The bond present in NaCl is ionic.
- NaCl appears as a solid crystal with less odour. When NaCl dissolves in water it can dissociate into ions called \[N{a^ + }\]and \[C{l^ - }\]. The bond between NaCl is the strongest because both the ions are smaller in size and the bond formed between ions of opposite charge is very strong. In order to break that bond high lattice enthalpy will be required.
- Therefore, Formation of NaCl is accelerated by Individual octet attainment, High lattice enthalpy and Stabilized solid crystal (FCC).
So, the correct answer is “Option D”.

Additional Information.
Uses of Sodium chloride are given below:
- NaCl is used as the food preservatives and flavor enhancer.
- It is used for the manufacture of chemicals such as sodium carbonate.
- It is used to absorb and transport nutrients, and also to maintain the blood pressure.
- It is used for manufacturing the glass.
- It is used for the build-up of ice on the roads.
So, the correct answer is “Option D”.

Note: - The bond formed a metal and non-metal is an ionic bond. The ionic bond is also called the electrovalent bond.
- The bond formed between two nonmetals is a covalent bond.