Covalent
- Sharting of the outer electrons between atoms.
- This bonds are presents in: Crystals with low thermal and electrical conductivity.
- And Solids formed by this bonds have:
- Low thermal and electrical conductivity.
- High mechanical strenght.
- But are brittle.
Ionic
- Like covaelnt bond, we have the shearing of an electron, however this time the electron is given by one atom to the other.
- One class of ionic solids which is very important for sensor is the metal oxides.
- Solids formed by this bonds have:
- Low thermal and electrical conductivity.
- Large mechanical strenght. (lower than covaelnt solids).
- But are brittle.
Metallic
- All the outer electrons of the atoms in the solid are sheared.
- Solids formed by this bonds have:
- High thermal and electrical conductivity.
- Good mechanical properties and strength.
- And are ductile materials.
Van-Der-Walls
- Weak bonds.
