Metallic Bonding
Overview
Metals can be hammered into sheets, drawn into wires and carry electricity through every cable in your home. These shared properties point to a single kind of bonding found in all metals, one that lets atoms hold together while still letting electrons flow freely.
In this lesson you will learn what metallic bonding is, how it produces a lattice of positive ions in a sea of moving electrons, and how this structure explains why metals conduct electricity and can be bent and shaped without breaking.
Objectives
- [Supplement] Describe metallic bonding as the electrostatic attraction between the positive ions in a giant metallic lattice and a ‘sea’ of delocalised electrons.
- [Supplement] Explain in terms of structure and bonding the properties of metals: (a) good electrical conductivity (b) malleability and ductility.
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Lesson Note
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Lesson Evaluation
Congratulations on completing the lesson on Metallic Bonding. Now that youve explored the key concepts and ideas, its time to put your knowledge to the test. This section offers a variety of practice questions designed to reinforce your understanding and help you gauge your grasp of the material.
You will encounter a mix of question types, including multiple-choice questions, short answer questions, and essay questions. Each question is thoughtfully crafted to assess different aspects of your knowledge and critical thinking skills.
Use this evaluation section as an opportunity to reinforce your understanding of the topic and to identify any areas where you may need additional study. Don't be discouraged by any challenges you encounter; instead, view them as opportunities for growth and improvement.
- Metallic bonding is the attraction between: A. Two non-metal atoms B. Positive ions and a sea of delocalised electrons C. Oppositely charged ions D. Shared electron pairs Answer: B
- What makes a metal able to conduct electricity? A. Free-moving delocalised electrons B. Free-moving ions C. Strong covalent bonds D. Weak forces Answer: A
- Why are metals malleable? A. Their bonds are weak B. Layers of ions can slide over one another C. They contain molecules D. They have no electrons Answer: B
- In a metal, the particles that move to carry current are the: A. Positive ions B. Neutrons C. Delocalised electrons D. Protons Answer: C
- A metal that can be drawn into a wire is described as: A. Brittle B. Ductile C. Volatile D. Soluble Answer: B
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