Chapter 9
Atomic Foundations of Matter
CBSE Class 9
Science Solutions
Educart Science class Class 9 NCERT Exemplar cover
Question:

What type of chemical bond is present in a solid compound that does not conduct electricity in the solid state but conducts electricity when dissolved in water?
[Pg. No. 179]

Answer: Verified

The compound contains an ionic bond (electrovalent bond). In the solid state, the ions in an ionic compound are fixed in position and cannot move freely, so the compound does not conduct electricity. When dissolved in water, the compound dissociates into free-moving ions, which can carry electric current. Therefore, the solution conducts electricity.

Example: Sodium chloride (NaCl).

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