AP BIOLOGY

Detailed explanation-1: -The surface tension of mercury is even higher, due to the metallic bonds ("sea” of shared electrons) between atoms. The intermolecular attraction between like molecules is called cohesion. The intermolecular attraction between unlike molecules is called adhesion.

Detailed explanation-2: -Metallic bonding: This type of covalent bonding specifically occurs between atoms of metals, in which the valence electrons are free to move through the lattice. This bond is formed via the attraction of the mobile electrons-referred to as sea of electrons-and the fixed positively charged metal ions.

Detailed explanation-3: -The lone pairs of the NH₃ molecule interact with partial positive hydrogen and establish an electrostatic attraction. It is a strong intermolecular force of attraction.

Detailed explanation-4: -Metallic solids are compounds that are entirely comprised of metal atoms that are held together by metallic bonds. Metallic bonding is a type of intramolecular force of attraction that occurs between a lattice of positive ions and a “sea” of delocalized electrons.