Solid NaCl is a bad conductor of electricity because

in solid state, there are no ions

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in solid NaCl, ions cannot move freely

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in solid NaCl, there are no electrons

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none of the above

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Solution

The correct option is B in solid NaCl, ions cannot move freely
Answer is B.
A substance can only conduct electricity if it contains charged particles (electrons or ions) that are free to move around. In solid sodium chloride, there are ions but these ions are locked into the ionic lattice and are unable to move.
NaCl (common salt) is solid in state and solid ions or compounds don't conduct electricity. It needs to be either melted, molten or dissolved in a solution (i.e. water) first. Only then will the electrons be free to move to either the Cathode (-ve) or to the Anode (+ve). In a liquid state the electrons are free enough to move.
Hence, solid NaCl is a bad conductor of electricity because its ions cannot move freely.

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Similar questions

Q. Assertion :

N a C l

is not a conductor of electricity in solid state whereas it does conduct electricity in aqueous solution as well as in molten state. Reason: In solid

N a C l

, the ions have fixed positions in the lattice structure and there are no free ions but in aqueous solution or molten state, the ions can move freely and thus conduct electricity.

Solid $N a C l$ is a bad conductor of electricity because :

Q. Assertion :

N a C l \to N a^{+} + C l^{-}

is dissociation and not ionization. Reason: Because in an ionic solid like

N a C l

, an electron is essentially already fully partitioned onto the chlorine. There is no transfer of electron.

During Electrolysis of NaCl,

NaCl is taken in molten state so it conducts eletricity because of the free electrons, so why are the free electrns present only in its molten state and not in its solid state and therefore resulting in soid NaCl not conducting electricity.

Q. I. The conductivity of molten

N a C l

is due to movement of

N a^{+}

and

C l^{-}

ions.
II. Solid

N a C l

is also conductor of electricity
III. Molten sodium is a good conductor because of mobile electrons.

Which of the above statements are correct?

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