Question

lead is malleable, so it can be pounded into flat sheets without breaking. how does the bonding within lead help to explain this property?
metallic bonds involve valence electrons that are removed from one atom and given to another, so the pounding helps the electrons move.
covalent bonds involve valence electrons that are shared between two metal atoms, so the bonds are strong enough to resist the pounding.
metallic bonds involve many valence electrons shared by many atoms, so the bonds can move around as the metal is pounded.
covalent bonds involve valence electrons that are removed from one atom and given to another, so the pounding helps the electrons move.

Explanation:

Lead is a metal with metallic bonding, where valence electrons form a delocalized "sea" shared by many atoms. This allows metal cations to shift positions when pounded without breaking bonds, explaining malleability. The correct option describes metallic bonding’s delocalized electrons enabling movement.

Answer:

Metallic bonds involve many valence electrons shared by many atoms, so the bonds can move around as the metal is pounded.