Ionic bonding and ionic compounds Quiz
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5 questions, one answer each
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1. Which factors give the strongest ionic bonding?
- A. Low ionic charge and large ionic radius
- B. High ionic charge and small ionic radius
- C. High ionic charge and large ionic radius
- D. Low ionic charge and small ionic radius
2. Which is the correct dot-and-cross description of the ions in sodium chloride?
- A. [Na]⁺ with 1 outer electron and [Cl]⁻ with 7
- B. Na with 1 outer electron and Cl with 7, sharing one pair
- C. [Na]⁺ with 8 outer electrons and [Cl]⁻ with 8
- D. [Na]⁻ with 8 outer electrons and [Cl]⁺ with 8
3. Which ion has the largest radius?
- A. Mg²⁺
- B. Na⁺
- C. F⁻
- D. O²⁻
4. A coloured ionic compound is placed on damp filter paper with a voltage applied. What shows that ions are present?
- A. The paper turns hot
- B. The compound melts
- C. Colours move towards the electrodes of opposite charge
- D. The paper changes mass
5. Solid lithium fluoride does not conduct electricity but molten lithium fluoride does. Which explanation is correct?
- A. Electrons are delocalised only in the liquid
- B. The ions are fixed in the solid but free to move when molten
- C. The ionic bonds are broken in the solid
- D. Molecules of LiF form in the liquid