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GK QUESTION#3561

Assertion (A): Ionic solids are formed by electrostatic attraction between cations and anions.

Reason (R): Ionic solids generally have low melting points and conduct electricity in the solid state.

  1. ABoth A and R are true, and R is the correct explanation of A
  2. BBoth A and R are true, but R is not the correct explanation of A
  3. CA is true, but R is falseCorrect answer
  4. DA is false, but R is true
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Answer

C. A is true, but R is false

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Explanation

The assertion is true: oppositely charged cations and anions are held together by electrostatic attractions in an ionic lattice. The reason is false. Typical ionic solids have high melting points and do not conduct through mobile ions while solid; their ions can carry current when molten or dissolved in a suitable solvent.

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