Question

What does it mean that valence electrons in a metal are delocalized?

Answer 1

Explanation:

The valence electrons in the metallic bond from the s and the p orbitals of the metal atoms delocalize. This means that the electrons which remain in the atom with their respective nuclei, instead of this they orbit the metal atoms and for a sea of the electrons that surrounds the nuclei of the atoms.

This means when one say that the valence electrons in a metal are delocalized.

Answer 2

It means they are not attached to their "parent" atom, and they are aloud to roam freely to move through the bulk structure.