Q20: Covalent and metallic bonding both involve interactions between atomic nuclei and valence electrons. ► Which of the following is a similarity between covalent and metallic bonding?
A They can link atoms into periodic
lattices.
B They are easily broken at room temperature.
c They always involve a "sea” of delocalized electrons.
D They are nondirectional.
E They can link atoms into separate molecules.
Which of the following is a difference between covalent and metallic bonding?
A Only covalent bonding can occur between atoms of different elements.
BOnly metallic bonding can involve more than one valence electron per bonded atom.
C Only metallic bonding can occur between oppositely charged ions.
D Only covalent bonding can produce materials that are electrically insulating.
E Only metallic bonding can produce materials that are electrically conductive.