metallic bonds are responsible for many properties of metals such as conductivity why is this possible

Question

A: an attraction between a positive charge and a negative charge is created
B: two metals bonded together are going to be more conductive than a metal bonded with a nonmetal
C: metals have low electronegativity so they are conductive because they pass charge easily
D: the bonds can shift because valence electrons are held loosely and move freely

Answer 1

The correct answer is:

D: the bonds can shift because valence electrons are held loosely and move freely.

Metallic bonds involve a "sea of electrons" that are delocalized and can move freely throughout the metal lattice. This mobility of valence electrons is what allows metals to conduct electricity and heat effectively, contributing to their characteristic conductivity. Options A, B, and C do not accurately capture the mechanism behind the conductivity of metals.