MHT CET Chemistry question

The solid NaCl is a bad conductor of electricity since [AIIMS 1980]

(A)In solid NaCl, there are no ions
(B)Solid NaCl is covalent
(C)In solid NaCl, there is no velocity of ionsCorrect
(D)In solid NaCl, there are no electrons

Answer: (C)

Solution

Solid NaCl is an ionic crystal made of Na⁺ and Cl⁻ ions that are held at fixed lattice positions, so the ions cannot move and carry charge; (a) is wrong

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Question ID VK-043096