1) Which of the following molecules contains a double covalent bond? a) H₂ b) O₂ c) N₂ d) Cl₂ 2) Which of the following has the highest electronegativity difference, leading to a polar covalent bond? a) H₂ b) H₂O c) O₂ d) CH₄ 3) Which of the following best describes the structure of a covalent compound? a) Lattice structure of positive and negative ions b) Free-moving electrons creating metallic bonds c) Discrete molecules held together by covalent bonds d) A sea of delocalized electrons 4) Which of the following compounds exhibits a polar covalent bond? a) HCl b) Cl₂ c) CH₄ d) N₂ 5) Which of the following has a coordinate covalent bond? a) NH₄⁺ b) H₂O c) CH₄ d) O₂

Covalent Bonding

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