Bonding Flashcards
Ionic bonding definition
Strong electrostatic attraction between oppositely charged ions
What is ionic bonding between
Metal and a non metal
What is the structure of ionic bonding
Ionic lattice
Properties of ionic bonding
Strong, substantial amounts of energy required to break electrostatic bonds
Can conduct electricity when MOLTEN
High Mp, Bp and solid at RT as substantial amounts of energy required to break electrostatic bonds
Brittle and if the layers of atoms move and two similarly charged ions are bedside eachother, the will push away shattering the crystal structure
What is ionic bonding
The transfer of electrons to gain a full outer shell
Covenant bonding definition
A shared pair of electrons
Covelant bonding is Formed between …
Two non - metals
What is the name for two or more atoms covalently bonded
Molecule
Diatomic
Two atoms covalently bonded as a molecule e.g O2, N2, H2
Why do non metal acids share electrons
To gain a full outer shell
Example of molecular covenant elements?
Chlorine, Oxygen
Example of molecular covenant compounds?
Methane, water
Molecular covenant Properties
Strong, covelant bonds require substantial amounts of energy to break
The molecules are only held together by weak Van Der Waals forces of attractions
Low MP, BP so are normally liquid or gas at RT
Don’t conduct electricity, no charged particles to carry a charge
Metallic bonding definition
Attraction between delocalised electrons and positive ions in a regular lattice
(Na+) e- (Na+) e- (Na+) e-
e- (Na+) e- (Na+) e- (Na+)
Properties of metallic bonded substances
High Mp and Bp and are normally solid at RT (excluding mercury) because substantial amounts of energy are required to break string metallic bonds between positive ions and delocalised electrons
Can conduct electricity as the delocalised electrons can carry a charge
Malleable and ductile as layers can slide without disrupting the bonding
