Covalent Network Flashcards
What does conscientious network contain
Covalent network contains a giant lattice of non metal atoms bonded togther by strong covalent bonds
How’s the M&B points
These elements have a very high melting and boiling points due to the large need to break strong covalent bonds that require a large amount of energy to break
3 element of cn
Boron- 3 atom bond hex
Silicon- spider 4 atom bond
Carbon-diamond and graphite
Explain why graphite is different from the rest of covalent networks
I’m graphite the carbon atoms form layers of and hexagonal rings that are held by LDF
the forces between layers are much weaker than c.b which allows layers to slide across each other
What does the carbon atoms use within each layer
3/4 e to form covalent bonds
The other electrons are delocalised
What’s a molecules
Group of atoms held togther by Covalent bonds
What are covalent molecular substances made up of
They are made up of molecules with weak LDF between molecules
