Multiple Choice Question Exam Practice
1 exam-style paper on Topic 2A Metallic Bonding, marked the moment you submit, with every answer explained and the notes to revise for anything you miss.
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Question 1 of 18 · Topic 3B Covalent BondingWrong · 0/1
A chemical compound has a high melting temperature and is hard and brittle. From this it can be deduced that its bonding could be
- Aionic but not covalentYour answer
- Bcovalent but not ionic
- Ceither ionic or covalentCorrect answer
- Dmetallic
About your answerGiant covalent compounds such as silicon(IV) oxide are also hard and brittle with very high melting temperatures. The data does not rule out covalent bonding.
ExplanationA high melting temperature with hardness and brittleness points to a giant lattice with strong forces throughout. Both giant ionic and giant covalent lattices fit, so the bonding could be either.
Revise thisGiant Covalent Structures
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