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Which One of the Following Would Be the Most Difficult

Question 56

Multiple Choice

Which one of the following would be the most difficult covalent bond to break in a chemical reaction?

A) Na⁺ and Cl⁻ in NaCl
B) two oxygen atoms in a molecule of O₂
C) two nitrogen atoms in a molecule of N₂
D) two hydrogen atoms in a molecule of H₂

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