Single Choice

Sodium chloride has a crystalline structure made up of $$Na^+$$ and $$Cl^-$$ ions. Why does $$NaCl$$ not conduct electricity in solid state?

ASolids do not conduct electricity.
BThe ions of $$NaCl$$ become mobile only in molten state and are not free to move in the solid state.
Correct Answer
CThe crystalline structure does not have ions.
DWhen a bond is formed between Ions they lose their charges.

Solution

Properties of a crystalline solid:-
1. These solids have a particular three-dimensional geometrical structure
2. The strength of all the bonds between different ions, molecules, and atoms is equal
3. These solids are the most stable solids as compared to other solids
4. The arrangement order of the ions in crystalline solids is of long order.
These are the reasons that in the solid structure $$NaCl$$ does not conduct electricity.
In water, crystalline solid compounds conduct electricity due to hydrolysis that occurs due to protonium and hydroxide ions, these ions are able to break the electrostatic attraction between $$Na$$ and $$Cl$$, Now the ions are free to move in solution and conduct electricity when needed.
So the correct option is [B]

SIMILAR QUESTIONS

Solid State

Which of the following are properties of crystalline solid?

Solid State

A cube of any crystal A-atom placed at every corners and B-atom placed at every center of the face. The formula of the compound is:

Solid State

Which of the following is not correctly matched ?

Solid State

Normally, solubility of a crystalline solid increases with temperature. Does it increase uniformly in all cases ? Name a substance whose solubility increases slightly with temperature.

Solid State

Gas equation pV=nRT is obeyed by ideal gas in

Solid State

Gas equation $$pV = nRT$$ is obeyed by ideal gas in

Solid State

Statement: Crystalline solids are isotropic. State whether the given statement is true or false.

Contact Details