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Metallic Bonding
IGCSE Edexcel (9-1) Chemistry
Question | Answer |
---|---|
What are delocalised electrons? | Delocalised Electrons are electrons which are free to move throuh out the whole structure. |
What is metallic Bonding? | Metallic Bonding is the electrostatic forces of attraction between each positive ion and delocalised electrons |
What does a metallic structure consist of? | A lattice of positive ions surrrounded by a sea of delocalised electrons |
Metals have Individual Molecules: True or False | False |
Why do most metals have high melting and boiling points. | Because of the strong electrostatic forces of attraction between each positive ion and delocalised electrons. Large amounts of energy is required to break them |
Why is the bonding in Magnesium Stronger than the bonding in Sodium | Magnesium has 2 electrons in its outer shell which are delocalised into the sea leaving behind ions with a 2+ charge. The electrostatic forces of attraction between 2+ ions and delocalised electrons are stronger than sodium. So magnesium has stronger... |
Why can Metals conduct electricity ? | Because the delocalised electrons are free to move throughout the Structure. |
Why are metals malleable and ductile? | Because when a force is applied to a peice of metal, The layers of positive ions slide over each other. |