Flashcards
Mettalic Bonding
Flashcards do conjunto (8)
- 1Define metallic bondingThe electrostatic attraction between positive ions and a sea of delocalised electrons
- 2Describe how metallic bonding takes placeThe outermost electrons of a metal atom are delocalised. This leaves a positive metal cation (e.g. Na⁺, Mg²⁺, Al³⁺)
- 3Name the structure in which metal elements existGiant metallic lattice structures
- 4Describe the properties of giant metallic lattice structuresMalleable and ductile (can be shaped/drawn into a wire)
Good thermal and electrical conductor
Insoluble (EXCEPT in liquid metals)
Number of delocalised electrons per atom affects melting and boiling point - 5Why are metals malleable and ductile?No bonds hold specific ions together - metal ions can slide over each other when the structure is pulled
- 6Why are metals good thermal/electrical conductor?THERMAL
Delocalised electrons can pass kinetic energy
ELECTRICAL
Delocalised electrons can carry a current - 7What happens to the melting/boiling point as the number of delocalised electrons increase?The more delocalised electrons there are, the stronger the bonding will be and the higher the melting/boiling point
- 8TRUE OR FALSE: The size of the metal ion and lattice structure affects melting/boiling pointTRUE
A smaller ionic radius will hold the delocalised electrons closer to the nuclei
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- O usuário eliminou as informações de disciplina FlashCards sobre Mettalic Bonding, criado por Usuário eliminado em 05-03-2018.
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- Usuário eliminado · mar 2018
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- 5 mar 2018
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- Criado por Yinka F · 3 mar 2018
- Copiado por Yinka F · 5 mar 2018
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