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All the following compounds are covalent except

Chemistry
WAEC 2025

All the following compounds are covalent except

  • A. NO\(_2\)
  • B. SO\(_3\)
  • C. SO\(_2\)
  • D. KNO\(_3\)
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Correct Answer: Option D
Explanation

KNO\(_3\) (Potassium Nitrate) is primarily an ionic compound. It consists of a metal cation (K\(^+\)) and a polyatomic non-metal anion (NO\(_3\)). While covalent bonds exist within the nitrate ion itself (NO\(_3\)\(^-\)), the overall structure is held together by ionic bonds.

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