Respuesta :
Ionic bonding is found in many ceramic structures such as NaCl, MgO, and Al2O3. Atoms have, unlike electrical charges, making them ions, which create an electrostatic attraction between atoms. This causes bonding between atoms.
The ions pack into a regular arrangement. The nature of the ceramic depends on the size of the ion charges and the size of the ions.
For example, the structure shown left is the rock salt structure, such as that for NaCl.
Covalent bonding is found in many ceramic structures such as SiC, BN, and diamond. The atoms in these ceramics are arranged so that each pair of nearest neighbor atoms forms a chemical bond by sharing a pair of electrons.
The high energy of covalent bonds makes these ceramics very stable with regard to chemical and thermal changes.
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