Question

Which statement best describes the effect of low ionization energies and low electronegativities on metallic bonding?
The valence electrons are easily delocalized.
The valence electrons stay in a single orbital.
The valence electrons break free of the crystals.
The valence electrons move closer to the nuclei.

Answer 1

"The valence electrons are easily delocalized."

Low ionization energy and low electronegativity mean atoms do not hold onto their valence electrons strongly, so those electrons become delocalized (the "sea of electrons") and can move freely through the metal lattice, which is the basis of metallic bonding.