Metallic Bonding Flashcards
What does metallic bonding involve
Delocalised electrons
What are electrons in the outer shell metal atoms
Delocalised (free to move)
What holds the positive metal ions and the shared negative electrons together
Strong electrostatic forces of attraction
What else is held together by metallic bonding
Metallic elements and alloys
Why is a lot of energy needed to break the bonds in metals
Electrostatic forces between the metal atoms and the delocalised sea of electrons are very strong. High melting and boiling points
Why are metals good conductors of electricity and heat
Delocalised electrons carry charge
Why are most metals malleable
Layers can slide over each other. Meaning they can be Bent or hammered
Why are alloys more useful
Because they are a mixture of 2 or more metals
What makes alloys harder than pure metals
Different sized atoms
No layers-more difficult to slide over each other
