Intermolecular forces at work: Dipole-dipole attraction, London dispersion forces
(And Hydrogen Bonding if applicable, [ H atom with O, N, or F atom ])
Intermolecular forces at work: London dispersion (weakest
compared to ionic or polar covalent bonds)
FORCES RANKED(1-5):
Intramolecular forces:
Intermolecular forces:
3. Hydrogen Bonding
4. Dipole-Dipole
5. London Dispersion
1. Polar Covalent Bond
2. Non-polar Covalent Bond
Ionic
Formed from a metal + nonmetal
2. Conduct electricity in the liquid state but not in the solid state
(form conductive solutions in water)
2. High melting point
2nd Strongest Intramolecular forces: Ionic Bond
Formation: Cations to Anions
Intermolecular forces at work: electrostatic
(strongest of intermolecular forces)
FORCES RANKED:
Intramolecular force:
Intermolecular force:
2. Electrostatic
4. London Dispersion
3. Ion-dipole
1. The Ionic Bond
Covalent Network
Formed by metalloids/carbon
1. Extremely high melting point
3/4. Nonconductors of electricity
Covalent bonds in a continuous network. They're the same as a
regular covalent bond, but being in a network gives them strength
The covalent network is even stronger than the ionic bond
(even though the ionic bond is generally always stronger)
FORCES RANKED:
Intramolecular forces
1. Covalent Network Bond
Intermolecular forces:
2. London Dispersion
Metallic
Formed by metal(s)
1. Strong electrical and thermal conductivity
3. Melting points vary depending on the metal (i.e. tungsten has a high
melting point, mercury has a low melting point)
1st Strongest Intramolecular forces: Metallic Bonds from the attraction
between positive metal ions and their surrounding valence electrons
(which enable them to convey electricity easily)
Basis of formation: Delocalized electrons to metal cations
Intermolecular forces at work: electrostatic
FORCES RANKED:
Intramolecular forces
1. Metallic Bond
Intermolecular forces:
2. Electrostatic
3. London Dispersion
Criteria
Forces (ranked from weakest to strongest)
Boiling point/melting point, Conductivity (with conditions)
By: David Girt
LEGEND:
RED cells invole melting points (Ranked from 1-4)
YELLOW cells involve conductivity (Ranked from 1-4)
ORANGE cells involve intra - and intermolecular forces (1-4)