Giant Convalent lattices

Question 1

Carbon and Silicon Bonding?

Answer 1

Both of these can have giant covalent lattice structures as they have 4 strong covalent bonds.

Question 2

Allotropes of Carbon

Answer 2

There are 3 allotropes:

• diamond
• graphite
• graphene

Question 3

Arrangement of Graphite

Answer 3

There have a flat hexagons covalently arranged with 3 bonds on each. this makes them shift and slide over each other. (dry lubricant used in
It has delocalised electrons, therefore it has mobile electrons therefore allowing electricity through.
Difficult to break up and therefore, are insolube in any solution

Question 4

Arrangement of Diamond

Answer 4

every carbon has 4 bonding pairs to 4 other carbons.
Very high mp and boiling point
very hard to break, used as tips of saws and drills
stiiff lattice structure
good thermal conductor
cant conduct any elecricity
doesn’t dissolve in any solution

Question 5

Silicon Structure

Answer 5

Crystal lattice like diamond

has similar properties to diamond