Periodic trends in bonding and structure

?

Metallic Bonding

Metallic bonding is the strong electrostatic attraction between the positive metal ions and the delocalised electrons

Metallic bonding forms a giant metallic lattice

Properties

- Metals can conduct electricity in both solid and liquid states, as there are a 'sea' of delocalised electrons which are free to move through the whole structure

- Metals are insoluble as the metallic bonds are too strong

- Metals have high melting and boiling points because a large amount of energy is needed to break the strong metallic bonds

(http://www.bbc.co.uk/staticarchive/fba2965c626a450042effd6174b49257d3b3a69f.gif)

1 of 2

Giant Covalent Lattice

Giant Covalent Lattice - A three-dimensional structure of atoms , bonded together by covalent bonds

Boron, Carbon and Silicon form Giant Covalent Lattices

Properties

- Giant Covalent Lattices don't conduct elecrity, as there are no free moving charged particles

- Giant Covalent Lattices are insoluble, as the covalent bonds are too strong

- Giant Covalent Lattices have very high melting and boiling points as a large amount of energy is needed to break the strong covalent bonds

(http://vignette1.wikia.nocookie.net/ellesmere-chemistry/images/4/4d/Giant-covalent.gif/revision/latest?cb=20130105142835)

2 of 2

Comments

No comments have yet been made

Similar Chemistry resources:

See all Chemistry resources »See all The Periodic Table resources »