Question

Which statement best describes the basis of the band theory of metallic bonding?
Molecular orbitals overlap to form atomic orbitals in which the valence electrons of the atoms travel.
Molecular orbitals overlap to form atomic orbitals in which all electrons of the atoms travel.
Atomic orbitals overlap to form molecular orbitals in which the valence electrons of the atoms travel.
Atomic orbitals overlap to form molecular orbitals in which all electrons of the atoms travel.

Answer 1

Atomic orbitals overlap to form molecular orbitals in which the valence electrons of the atoms travel.

Explanation: In band theory, the atomic orbitals of many atoms in a solid combine into extended (delocalized) molecular orbitals or energy bands; the valence (and conduction) electrons are delocalized and can move through these bands, while core electrons remain localized.