Covalent bonding and dative bonds Quiz
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5 questions, one answer each
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1. Which describes a dative covalent bond?
- A. A shared pair in which both electrons come from one atom
- B. Attraction between oppositely charged ions
- C. A shared pair with one electron from each atom
- D. A bond between a metal ion and delocalised electrons
2. How many electrons are shared in the bond between carbon and nitrogen in HCN?
- A. 2
- B. 4
- C. 6
- D. 8
3. Which species contains a dative covalent bond?
- A. CH₄
- B. NH₄⁺
- C. NaCl
- D. CO₂
4. What does a region of high electron density between two nuclei in a map indicate?
- A. An ionic bond
- B. Delocalised electrons
- C. A shared pair of electrons, a covalent bond
- D. A lone pair on one atom
5. Why is the aluminium atom in AlCl₃ able to accept a lone pair?
- A. It has eight outer electrons
- B. It has six outer electrons and a vacant orbital
- C. It has a negative charge
- D. It has no outer electrons