22
(Continued)
Covalent bonding occurs when chemical stability is made possible by
atoms ____________________ valence electrons.
sharing
23. Metallic bonding is the continual exchange of valence electrons between
several atoms, so that all the participating atoms appear to have the eight
valence electrons required for stability. The atoms of metallic substances
are closely packed together. In most metals, as many as twelve atoms
surround each atom. The valence electrons of all these atoms are loosely
held and continually being exchanged. The exchange process produces an
attraction between like atoms in a metal. Although similar to the covalent
bond, the metallic bonding is mobile electrons being shared by two or more
atoms simultaneously.
In metallic bonding, chemical stability is achieved by the continual
________________ of valence electrons between ________________
atoms.
1-19
IT0341
Previous Page
