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Question

Why is metallic bonding different from ionic or covalent bonding?
  1. It is difficult to determine the number of valence electrons involved in a metallic bond
  2. Metallic bonding is the only type of bonding that involves metal atoms.
  3. The valence electrons in a metallic bond are delocalized while the valence electrons in ionic or covalent bonds are localized.
  4. Metallic bonds are rare while ionic and covalent bonds are more common in nature.

A
Metallic bonding is the only type of bonding that involves metal atoms.
B
Metallic bonds are rare while ionic and covalent bonds are more common in nature.
C
It is difficult to determine the number of valence electrons involved in a metallic bond
D
The valence electrons in a metallic bond are delocalized while the valence electrons in ionic or covalent bonds are localized.
Solution
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Metallic bonds are formed by attraction between metal ions and delocalized or free e. Where as ionic bond are formed by transfer of e from one atom to another and in covalent, sharing of e takes place.

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