AP BIOLOGY

BIOCHEMISTRY

POLAR AND NONPOLAR MOLECULES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is the basis of a metallic bond?
A
the attraction of neutral metal atoms.
B
the attraction between protons and neutrons.
C
the attraction between positive metal ions and interlocking electrons.
D
the attraction between positive metal ions and free floating electrons.
Explanation: 

Detailed explanation-1: -Metallic bonds result from the electrostatic attraction between metal cations and delocalized electrons.

Detailed explanation-2: -Metallic bonds are the force of attraction between positive metal ions and the valence electrons that are constantly moving around them. The ions form a lattice-like structure held together by the metallic bonds. Metallic bonds explain why metals can conduct electricity and bend without breaking.

Detailed explanation-3: -The metallic bond is the force of attraction between these free-moving (delocalised) electrons and positive metal ions . Metallic bonds are strong, so metals can maintain a regular structure and usually have high melting and boiling points. Metals are good conductors of electricity and heat.

Detailed explanation-4: -Metallic bonds are the chemical bonds that hold atoms together in metals. They differ from covalent and ionic bonds because the electrons in metallic bonding are delocalized, that is, they are not shared between only two atoms. Instead, the electrons in metallic bonds float freely through the lattice of metal nuclei.

Detailed explanation-5: -metallic bond, force that holds atoms together in a metallic substance. Such a solid consists of closely packed atoms. In most cases, the outermost electron shell of each of the metal atoms overlaps with a large number of neighbouring atoms.

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