Question

in a piece of metal, what holds the atoms together?
o the positive charges of the nuclei and the localized electrons around them
o the negative charges of the nuclei and the localized electrons around them
o the positive charges of the nuclei and the negative charges of delocalized electrons
o the negative charges of the nuclei and the positive charges of delocalized electrons

Explanation:

In a metal, metal - positive ions (formed by nuclei) and delocalized electrons exist. The electrostatic attraction between the positive charges of the nuclei and the negative charges of delocalized electrons holds the atoms together in a metal. Nuclei have positive charges, and electrons have negative charges.

Answer:

the positive charges of the nuclei and the negative charges of delocalized electrons