Free Ionic and Molecular Crystals MCQs with Answers
62 Ionic and Molecular Crystals MCQs from Chemistry, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Ionic crystals contain oppositely charged ions held by electrostatic forces, whereas molecular crystals contain discrete molecules joined by weaker intermolecular forces. Their structures explain differences in melting point, hardness, volatility, solubility and electrical conductivity, especially between solid and molten states.
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62 questions · page 4 of 4
- A. ionic compounds
- B. polymeric compounds
- C. covalent compounds
- D. coordination compound
Explanation: Fajan's rule explains that small, highly charged ions have high polarizing power due to their charge density.
Correct answer: covalent compounds- A. The ionic bonds are non-directional in character
- B. The crystals of covalent compounds are made up of molecules
- C. The covalent bonds are rigid and non-directional
- D. Ionic compounds have high melting points and boiling points
Explanation: Covalent bonds are directional because they involve specific orientations of shared electron pairs, leading to definite molecular shapes.
Correct answer: The covalent bonds are rigid and non-directional