Question

in which type of bonding are electrons delocalized and shared among a \sea\ of atoms?
ionic bond
metallic bond
molecular bond
covalent bond
which of the following substances is a typical example of a compound formed through ionic bonding?
sodium chloride (nacl)
water (h₂o)
diamond (c)
copper (cu)

Explanation:

1. In metallic bonding, electrons are delocalized and move freely among a "sea" of metal - atoms. In ionic bonding, electrons are transferred from one atom to another, in covalent bonding electrons are shared between specific atoms, and molecular bonds can refer to different types including covalent bonds.
2. Sodium chloride (NaCl) is formed through ionic bonding as sodium donates an electron to chlorine. Water is formed by covalent bonding, diamond is a covalent - network solid, and copper is a metal with metallic bonding.

Answer:

1. B. Metallic bond
2. A. Sodium chloride (NaCl)